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REG-BlackRock World Mng: Half-year Report

BlackRock World Mining Trust plc
LEI - LNFFPBEUZJBOSR6PW155

Half Yearly Financial Report 30 June 2019

OVERVIEW AND PERFORMANCE

PERFORMANCE RECORD AS AT 30 JUNE 2019

                                                    30 June 2019 (unaudited)  31 December 2018 (audited) 
 Net assets (£’000)¹                                                 777,571                     685,595 
 Net asset value per ordinary share (NAV) (pence)                     440.97                      388.81 
 Ordinary share price (mid-market) (pence)                            375.50                      340.50 
 EMIX Global Mining Index (net total return)                          643.03                      532.67 
 Discount to net asset value (2)                                       14.8%                       12.4% 
                                                          ------------------          ------------------ 
 Performance                                                                                             
 NAV (total return) (3)                                               +17.0%                      -11.5% 
 Ordinary share price (total return) (3)                              +14.4%                      -10.7% 
 EMIX Global Mining Index (net total return)                          +20.7%                       -6.2% 
                                                                 ===========                 =========== 

1     The change in net assets reflects market movements and dividends
paid.

2     This is the difference between the share price and NAV per share
with debt at par.

3     This measures the Company’s NAV and share price total return,
which assumes dividends paid by the Company have been reinvested.

                                                For the six months ended 30 June 2019 (unaudited)  For the six months ended 30 June 2018 (unaudited)            Change % 
 Revenue                                                                                                                                                                 
 Net revenue profit after taxation (£’000)                                                 20,160                                             16,393               +23.0 
 Revenue return per ordinary share (pence)                                                  11.43                                               9.29               +23.0 
                                                                               ------------------                                 ------------------  ------------------ 
 Dividend per ordinary share (pence)                                                                                                                                     
 – 1st interim                                                                               4.00                                               3.00               +33.3 
 – 2nd interim*                                                                              4.00                                               3.00               +33.3 
                                                                               ------------------                                 ------------------  ------------------ 
 Total dividends paid and payable                                                            8.00                                               6.00               +33.3 
                                                                                      ===========                                        ===========         =========== 

*     Payable on 1 October 2019.

CHAIRMAN’S STATEMENT FOR THE SIX MONTHS TO 30 JUNE 2019

In my first half yearly report to you as Chairman, I am pleased to be able to
report growth in the Company’s net asset value per share (NAV) over the six
month period to 30 June 2019.

MARKET OVERVIEW
Mining shares made a strong start to 2019, as the fears of a sharp slowdown in
Chinese demand which had characterised the last quarter of 2018 proved to be
unfounded. A reversal in the likely trajectory of US interest rates created a
more positive tone for equity markets, as they had previously been bracing for
rising rates. The tragic collapse of Vale’s Brumadinho tailings dam and
associated loss of life also significantly impacted the iron ore market,
lifting prices as capacity was taken out of production in order to test the
vulnerability of dams elsewhere in the region.

PERFORMANCE
Over the six months ended 30 June 2019, the Company’s NAV increased by 17.0%
and the share price by 14.4%. By way of reference, the EMIX Global Mining
Index (net total return) (Reference Index) increased by 20.7% and the FTSE-All
Share Index increased by 13.0% (all percentages calculated in sterling terms
with dividends reinvested). The Consumer Price Index 12-month inflation rate
in June was 2.0%.

As a long-term investor, with an investment strategy based around a range of
different mining securities, including exposure to fixed interest securities,
royalties and traded options, there will be periods of time when short-term
performance deviates from that of the all equity Reference Index, which is
provided as a reference rather than as a specific benchmark. In this period,
for instance, our NAV increase compared with the Reference Index, in part
reflects the Company’s exposure to assets which are not part of the
Reference Index, as well as lack of exposure to Fortescue Metals, an iron ore
producer, which was highly geared to the sharp rise in the iron ore price
arising from the Brazilian tailings dam incident. Over the long term, our goal
is very much to provide superior risk adjusted returns to those which can be
achieved from simply investing in the Reference Index.

As set out in the 2018 Annual Report, we added to the Company’s holding in
Vale’s debentures in February. This continues our strategy of selectively
adding to attractive longer-term assets, taking advantage of the Company’s
closed-end structure to make strategic investments which are not available or
suitable for funds with shorter-term horizons, with their requirement to meet
daily redemption requests. In this instance, the debenture income is by way of
a royalty exposed to the revenues arising from Vale’s Northern System and
Southeastern System iron ore deposits in Brazil. The royalty is currently
paying from production from the Northern System which has not been impacted by
the mine associated with the tailings dam event.

Since the period end and up to the close of business on 19 August 2019, the
Company’s NAV has decreased by 6.0% compared to a fall of 5.4% (on a net
return basis) in the Reference Index (with dividends reinvested).

REVENUE RETURN AND DIVIDENDS
The Company’s net revenue earnings for the six month period to 30 June 2019
amounted to 11.43p per share (six months to 30 June 2018: 9.29p per share) an
increase of 23.0%. Six special dividends totalling £10.2 million were
received during the six month period from BHP, Rio Tinto, Coronado Global
Resources, China Molybdenum, Newmont Mining and South32. The special dividend
from BHP amounting to £5.2 million has been treated as capital, whilst the
other five have been treated as income.

The first quarterly dividend of 4.00p per share was paid on 28 June 2019 and,
today, the Board has announced a second quarterly dividend of 4.00p per share
which will be paid on 1 October 2019 to shareholders on the register on 30
August 2019, the ex-dividend date being 29 August 2019. The increase in the
interim dividend level over 2018 represents the Board’s desire to smooth
dividends paid in 2019.

DISCOUNT
The discount of the Company’s share price to the underlying NAV per share
finished the period under review at 14.8% on a cum income basis having stood
at 12.4% at the start of the year. At the close of business on 19 August
2019, the Company’s shares were trading at a discount of 14.9%.

The Directors recognise the importance to shareholders that the market price
of the Company’s shares in the stock market should not trade at a
significant discount to the underlying NAV. Accordingly, the Board monitors
this closely and will consider the repurchase of shares in normal market
conditions when it believes it is in shareholders’ interests. During the
period under review, the Company did not repurchase any shares. Since the
period end, and up to the date of this report, the Company repurchased 33,766
shares for a total consideration of £129,000.

GEARING
The Company operates a flexible gearing policy which depends on prevailing
market conditions. It is not intended that gearing will exceed 25% of the net
assets of the Company and its subsidiary. The maximum gearing during the
period was 14.0%.

BOARD
Ian Cockerill retired as Chairman of the Company following the Company’s
Annual General Meeting held on 2 May 2019. This followed the announcement of
his appointment to the board of BHP and the Board would like to express its
appreciation for all his efforts on behalf of the Company during his time as
both a Director and Chairman. The Board has decided that it will now seek to
appoint one or more additional directors with appropriate industry experience
and has retained headhunters to assist in this process.

OUTLOOK
Current low valuations in the sector appear to reflect investor caution about
the outlook for global growth and therefore scepticism about current pricing.
This sees the sector trading at a significant valuation discount to world
markets, despite the improvement in balance sheets across the sector, strong
levels of cash generation, and the scope to use surplus cash flow to enhance
earnings per share through buy backs.

Our Portfolio Managers believe that, notwithstanding the duration of the
current economic cycle, there remains scope for economic growth to continue.
With high and well covered dividend yields, the major diversified mining
companies offer an attractive return from their dividend income alone,
enhanced by the scope for capital appreciation when the strength and
flexibility of their free cash flow becomes better appreciated by the market.

DAVID CHEYNE
20 August 2019

INVESTMENT MANAGER’S REPORT

The year 2019 has so far been a year in which unforeseen events have impacted
the performance of both the Company and the mining sector more than in recent
years. Despite global markets continuing to grow, the gyrations in both
political and financial factors have largely dictated returns. In addition,
the tragic tailings dam collapse in Brazil has completely altered the iron ore
market, which in turn significantly shifted the outlook for iron ore producers
around the world. For the first six months of the year the Reference Index
delivered a net return of 20.7% (with dividends reinvested) versus the MSCI
World Index return of 17.0%.

Another area of frustration has been the ongoing derating of resources
companies, as multiples have continued to contract versus prior periods. The
obvious value that is available in the equity market today is encouraging, but
the fact that it has been around so long leaves us wondering when the sector
is going to be able to command the multiples it used to enjoy.

Over the six month period the NAV of the Company increased by 17.0% with
dividends reinvested. The strong positive return has come from our exposure to
the diversified companies which have benefited from being exposed to iron ore
and Ero Copper, an exploration and development company in Brazil, which has
successfully delivered on its planned rejuvenation of historic assets. The
single largest contributor to the lower return relative to the Reference Index
came from not owning Fortescue Metals following the Brumadinho tailings
collapse in January this year.

POSITIVE TIMES RETURN
It is very pleasing to see the sector returning to positive territory. In last
year’s Annual Report we mentioned how disappointing it was to see companies
doing the right thing but not being rewarded by the market. This confusing
trend continues today as generalist investors remain on the side-lines, still
nervous about increasing exposure to the miners. It is easy to have sympathy
with their caution due to the ongoing US/China trade discussions, slowing
global growth, political battles in Europe, as well as Brexit, reversal of US
interest rate policy, heightened tensions in the Middle East and North Korea
once again testing missiles. Despite all of this, we feel that it is important
for investors to look through the headlines and search for the detail behind
the companies to look at the true investment case and not get distracted by
media coverage of the macro issues.

The mining sector today is in a very different place to that of prior decades
and cycles. The lessons that have been learnt from these earlier periods have
shifted strategy away from growth at any cost to a more shareholder friendly
approach. We describe the potential for the last few years and those in the
near term to be called the ‘Era of the Shareholder’.

In this period we have seen a number of things play out. It started in 2016
when companies went through a process of right sizing the debt burden by
deleveraging balance sheets. Assets were sold, cash flows were used to repay
debt and management outlined a disciplined approach to capital allocation. The
culmination of these actions left the large diversified mining companies
looking very different to prior periods. Today all of them have conservative
balance sheets with some close to having zero net debt. Capital expenditure
levels remain low as projects go through tougher approval processes and
reinvestment decisions are reviewed versus returns to shareholders. New supply
is also looked at in the context of its impact on existing supply and
therefore pricing to see what it might do to the profitability of existing
production (iron ore markets being the best example of this). Dividends are no
longer progressive but based on payout ratios and many companies are reducing
their equity base by buying back shares. All of this should boost interest in
the sector, but for the reasons mentioned earlier it seems that the attractive
characteristics on display are not yet enough to tempt people back into the
sector when viewed in the context of macro risks.

This year has been a tragic period for the mining sector following the
collapse of the Brumadinho tailings dam in Brazil. The complete collapse of
the retaining wall caused vast amounts of inert mine waste to flow downstream
and this resulted in a huge loss of life. Vale, the Brazilian mining company,
and local authorities are still working out the exact cause of the event and
we expect clarity later this year but for the time being it has had a material
impact on iron ore markets. Vale’s production of iron ore has been severely
impacted with iron ore production estimated to be approximately 60Mts lower
versus the prior year. On its own, this represents close to 4.0% of the
seaborne iron ore market, but more importantly it resulted in huge volatility
in iron ore price premiums for ore qualities and supply into the pellet
production market.

Outside of Brazil, iron ore supply has also been impacted by problems in
Australia where cyclones and production issues have taken additional supply
out of the market. In total we estimate that close to 93Mts has been lost from
the market this year and it is unlikely that much of this, if any, can be
replaced with higher production during the remainder of the year. The fact
that this has happened when steel production rates in China are at record
levels, currently annualising at over 1 billion tonnes of production, means
that inventories of iron ore at Chinese ports have fallen sharply, leaving the
market tight going into the seasonally weaker summer months and boding well
for the ongoing profitability of iron ore producers in the near term.

Base metal prices have generally been weaker as fears of slowing growth have
cooled estimates for demand. Copper in particular has been surprisingly weak
given the elevated level of supply disruptions in South America, Indonesia and
Africa. Nickel markets remain hostage to the rapidly growing supply of highly
profitable integrated stainless steel being produced in Indonesia and the
Company is well positioned to benefit from this trend.

Precious metals, particularly gold and palladium, have performed well with the
former benefiting from the shift in monetary policy in the US and expectations
of rate cuts and a weaker dollar. The latter has seen supply tightness and
strong demand result in prices moving to high levels and, despite expectations
for this only to be temporary, the palladium price has remained strong.

SELECTED COMMODITY PRICE CHANGE

 Commodity                                          30 June 2019  % change YTD         % change  
                                                                     in 1H 2019   average price  
                                                                                     1H 2019 vs  
                                                                                         1H 2018 
 Iron Ore (China 62% fines) U$/t                           118.2          28.9%             0.0% 
 Oil West Texas Intermediate (Cushing) US$/barrel           58.2          28.9%           -12.6% 
 Nickel US/lb                                               5.72          19.0%           -11.2% 
 Gold US$/oz                                              1412.3          10.2%            -0.9% 
 Met Coal U$/t                                               191           3.8%            10.3% 
 Platinum US$/oz                                           818.0           3.0%           -11.5% 
 Zinc US$/lb                                                1.16           1.9%           -16.2% 
 Copper US$/lb                                              2.71           0.6%           -10.9% 
 Silver US$/oz                                              15.3          -1.2%            -8.5% 
 Tin US$/lb                                                 8.54          -3.5%            -3.1% 
 Aluminium US$/lb                                           0.81          -4.5%           -17.2% 
 Lead US$/lb                                                0.87          -4.5%           -20.1% 
 Uranium US$/lb                                             24.7         -13.3%             0.0% 
 Lithium (Battery Grade China) U$/t                       11,700         -18.2%           -17.8% 
 Thermal Coal (Newcastle) U$/t                             72.13         -28.9%          -15.12% 

Sources: Datastream and Macquarie.

In recent years, we have emphasised the underlying themes that the Company
invests in, with portfolio returns largely driven by those themes as opposed
to just commodity beta. These themes evolve as the fundamentals of the
companies and markets change. For example from 2016 to 2018 the Company had
significant exposure to deleveraging. This theme has largely played out and
the companies that were part of this strategy have moved from deleveraging to
rewarding shareholders. Resource replenishment, capital discipline, asset
quality and growth remain key parts of the portfolio and we expect these to be
longer term in relation to overall performance. The reform agenda in China
continues to play a key role on commodity markets, especially with the
increased global focus on the environment. A new area for the Company has been
to review opportunities in recycling and reuse of materials. We expect this
area to be a core part of global materials production in years to come but at
present the opportunity to invest in this area remains challenging due to a
lack of choice.

SHAREHOLDER RETURNS
In recent reports we have emphasised the improvement in capital discipline
across the sector with balance sheets strengthened, less investment in growth
and improved returns to shareholders via dividends and buybacks. During 2016
and 2017 the primary focus for the sector was strengthening balance sheets and
since 2018 we have seen companies look to step up returns to shareholders via
dividends and in some cases buybacks. The two largest companies in the sector,
BHP and Rio Tinto, announced record dividends in 2018 which the Company
significantly benefited from at the beginning of this year. Over the last
twelve months BHP and Rio Tinto have returned US$16,570 million and US$13,895
million to shareholders respectively.

As we look into the second half of the year, we continue to remain positive on
the outlook for dividends particularly for the iron ore exposed diversified
miners given the rally in the iron ore price and the resulting ‘windfall
profits’ year-to-date. We increasingly see dividends and buybacks as an
important component of total shareholder return given the low level of
reinvestment into growth across the sector.

With dividends across the sector underpinned by record balance sheet strength,
we find it perplexing that the sector continues to trade at an elevated
dividend yield. There are numerous factors cited to explain this such as
dividend volatility following the move to pay-out ratios and the risk of
dividend cuts if commodity prices weaken. Despite this, we struggle to see why
the mining sector does not increasingly appeal to traditional UK income
investors with a number of the UK dividend stalwarts increasingly coming under
pressure to cut dividends.

A common criticism of the mining sector is the perceived lack of growth.
Whilst this is largely correct if we look at volume growth across the sector
on an absolute basis, it is not the case if we look at growth on a per share
basis. Some interesting analysis from Citigroup highlights that the major
mining companies have meaningful growth on a per share basis if they use 50%
of their free cash flows to buyback shares at the current share price. Under
this scenario we see 15% to 30% copper equivalent volume growth on a per share
basis over the next two years for the UK diversified miners, in addition to
the dividend pay-out policies they have committed to. Given the low execution
risk of this growth and the compounding benefits of reducing shares through
time, we believe the sector should consider this strategy more aggressively.

GROWTH AND RESOURCE REPLENISHMENT
Whilst growth across the sector remains muted, we continue to look for, and
invest in, quality growth companies where we see that growth translating into
growth on a value per share basis. The majority of the Company’s growth
focused investments are copper producers, given the need for further supply to
be added in that market longer term. Key copper growth investments in the
portfolio include Ero Copper, First Quantum Minerals, Teck Resources, SolGold
and Lundin Mining, following its recent acquisition of the Chapada copper/gold
mine from Yamana.

Among our growth investments Ero Copper, a Brazilian based copper producer,
has been the standout investment for the Company, up almost 400% since its IPO
in 2017. Ero Copper continues to have exploration success at its existing
mines Pilar and Vermelhos, with the company currently undertaking a
significant regional exploration programme. This will confirm whether these
assets have district potential that would support a much higher production
level and likely attract corporate interest from the majors.

Another significant growth company for the Company is First Quantum Minerals
where we have exposure to both equity and the debt. It has been a volatile six
months for the shares which significantly outperformed following Chinese
stimulus and expectations on a US/China trade deal, to give all its gains back
by the end of June following the announcement of increased sales taxes in
Zambia and calls for royalty rates to be reviewed in Panama. Our investment
thesis for First Quantum Minerals has centred around the company’s ability
to deleverage, with free cash flow building strongly once Cobre Panama moves
into production. The increase in royalties and taxes, combined with higher
near-term capital expenditure at Cobre Panama and a lower copper price, has
seen this cash flow inflection point pushed out and we have subsequently
chosen to reduce the equity position in the portfolio.

In addition to volume growth, companies that have successfully invested in
exploration through the cycle and have sufficient asset quality to replenish
reserves and resources, we believe will be strong outperformers in this next
phase of the cycle. This is particularly prevalent amongst the gold companies
given their shorter mine lives and greater need for reinvestment. Australian
based gold producer Northern Star Resources has an excellent track record of
adding value through exploration at its existing Australian assets and last
year made its first international acquisition acquiring the Pogo Mine in
Alaska from Sumitomo. We remain optimistic that Northern Star Resources can
extract significant value from this asset as it looks to implement its world
class operating practices to improve costs and productivity at the operation,
as well as invigorate exploration around the asset.

CHINA SUPPLY-SIDE REFORM AND INCREASING ENVIRONMENTAL STANDARDS
Over the last couple of years we have discussed the impact of China’s
supply-side reform agenda and efforts to improve environmental standards in
the country. This has had a significant impact on the steel, aluminium and
coal industry with pollutive and loss-making capacity closed and any new
capacity limited to high quality efficient operations. China’s efforts to
combat pollution have been relaxed this year, as it has increased steel
production to support the domestic economy. Despite this, the longer-term goal
of reducing pollution remains clear. This should support demand and, in turn,
price premiums for high quality product such as high grade iron ore, high
calorific value thermal coal and ethically sourced cobalt.

Another key development in this area has been China’s move to ban waste
imports from 2017. This is a wide ranging policy with China, previously the
world’s largest importer of waste, banning 24 types of scrap from being
processed in the country in 2018. In the metals space, the most significant
impact has been in the copper scrap market with China banning the import of
category-7 copper scrap. The plastic and packaging market has also been
significantly impacted, with developed countries no longer able to rely on
China to deal with their waste problem. This is a profound issue which we
expect will continue to gain traction through time. As we look forward, we
expect environmental measures to continue to be at the forefront of Chinese
Government policy which will increase the demand for electric vehicles,
renewable energy and recycling.

Today the metals recycling industry remains fragmented, but we expect to see
significant growth over time, particularly as China begins to recycle steel.
The Company’s exposure to the recycling theme is primarily through its
holding in Umicore, a recycling and battery cathode material producer. Umicore
is set to deliver strong organic volume growth over the medium term, leveraged
to the growing demand for electric vehicles. During the first half of 2019 the
shares came under pressure following a profit downgrade, with the company
guiding to weaker than expected growth in electric vehicles over the next two
years than originally anticipated. Despite this, we believe the longer-term
trend remains intact and we continue to retain exposure to Umicore.

BATTERY MATERIALS
The rise of the electric vehicle (EV) has continued this year, led by growth
in sales of electric vehicles in China which grew 41% compared with the
equivalent six months in the prior year (Source: CAAM). Sales have been
incentivised by significant subsidies in China; however, the subsidies have
been so successful they are now no longer required to meet government targets.
As such these subsidies will halve in the second half of 2019 before being
removed in 2020 and we expect this to be a headwind to near-term EV sales in
China. We have seen the industry destock ahead of the normalisation of demand
and sentiment for growth decline. The raw materials that go into the battery -
cobalt and lithium - have been hit by the tempering of expectations after
strong price increases in 2017 and 2018; however, it is important to note that
the absolute tonnage demand continues to grow strongly.

Cobalt prices have continued to decline, due to a large increase in refined
supply. A key driver here has been production from the Democratic Republic of
Congo where both Chinese and artisanal producers responded with surprising
speed to the very high cobalt price in the first half of 2018. Another
headwind for the cobalt price has been the mix of different metals used in the
battery, with technological advances resulting in the increased thrifting of
cobalt; however, this is unlikely to completely offset the volume growth
required to meet electric vehicle demand.

Prices for lithium have continued to move lower in the first six months of
2019, down 18.2%. As well as the tempered growth outlook, prices have been hit
by bottlenecks in the battery supply chain, with some Australian miners being
unable to sell their lithium spodumene concentrate due to processing capacity
builds being delayed. The Company’s 0.9% holding in Albemarle has been hit
by negative sentiment around lithium prices; however, we expect the impact to
be limited due to Albemarle’s portfolio of long-term contracts which secure
pricing in exchange for quality supply security. Albemarle also remains well
placed to benefit from volume growth, with a number of key projects such as
the Atacama and Greenbushes expansion. Albemarle further added to their
project pipeline by acquiring 50% of the Wodgina deposit from Mineral
Resources in the first half of 2019; this deal is expected to close in the
second half of 2019.

Another major battery metal is nickel where demand is expected to benefit from
the increased penetration of electric vehicles and thus demand for lithium
batteries. However, today the number one use of nickel driving near term
demand is stainless steel production. Not all nickel production is created
equal when it comes to suitability for different end-uses, and for battery
cathodes the most efficient nickel is nickel sulphide, whilst for stainless
steel ferronickel is the most cost effective.

2019 has seen large volume growth from Indonesia in ferronickel, as well as
stainless steel. The Company has exposure to these rising volumes through its
0.7% holding in Nickel Mines which was up 57% (Source: Bloomberg) in the
period as its assets have ramped-up. Outside of ferronickel there has been a
lack of supply for nickel, with production shrinking for the last three years
and this may cause an eventual divergence in pricing of the nickel market.

ROYALTY AND UNQUOTED INVESTMENTS
The Company currently has one unquoted investment, the OZ Minerals Brazil
Royalty, representing 2.1% of the portfolio as at the end of June. The Company
has an additional quoted royalty investment, the Vale debentures, representing
3.0% of the portfolio, with total royalty investments equal to 5.1% of the
portfolio. This, and any future investments, will be managed in line with the
guidelines set by the Board as outlined to shareholders in the Strategic
Report in the 2018 Annual Report.

OZ MINERALS BRAZIL ROYALTY CONTRACT (2.1%)
In October 2013 the Company signed a non-binding memorandum of understanding
with Avanco Resources for a contractual royalty covering its exploration
licenses within the world-class mineral district of Carajas in Brazil. A
binding royalty agreement was subsequently signed in July 2014 in which the
Company provided US$12 million in return for a Net Smelter Return (net revenue
after deductions for freight, smelter and refining charges) royalty payments
comprising 2% on copper, 25% on gold and 2% on all other metals produced from
their Antas North and Pedra Branca licenses. In addition, there will be a flat
2% royalty over all metals produced from any other discoveries within
Avanco’s license area as at the time of the agreement.

Last year we were delighted to report that Avanco was successfully acquired by
OZ Minerals, an Australian based copper and gold producer for A$418 million,
with the royalty now assumed by OZ Minerals. Since our initial US$12 million
investment was made, we have received US$11.2 million in royalty payments with
the royalty on track to achieve a less than three year payback on the initial
investment. As at the end of June 2019, the royalty was valued at £18.3
million (2.1% of the portfolio) which equates to a 187.3% total return since
our investment.

After the interim period, OZ Minerals released its review of the core
Brazilian assets acquired from Avanco, including updated resource statements
at Antas North and Pedra Branca and its proposed development strategy. OZ
Minerals is looking to adopt a low risk, low capex, hub strategy to leverage
the existing processing facilities at Antas. OZ Minerals has guided for the
Antas North mine to be closed in 2021, with ore from Pedra Branca to be
trucked and processed through Antas’s processing facilities from mid-2021.
This is a lower capital requirement for OZ Minerals allowing them to develop
Pedra Branca quicker than originally anticipated. OZ Minerals has reduced the
copper grade at both assets, which has resulted in lower production at both
Antas and Pedra Branca. OZ Minerals is currently finalizing the economics at
Pedra Branca with a decision to mine to be made at the end of the third
quarter of 2019.

Following the period end, the Directors, in conjunction with the BlackRock
EMEA Pricing Committee, have chosen to downgrade the independent valuation of
the royalty by 7%, following the update from OZ Minerals. This valuation will
be reviewed post the review at Pedra Branca, which is due at the end of the
third quarter of 2019.

VALE DEBENTURES (3.0%)
As noted in last year’s Annual Report, the Company completed a significant
transaction in February to increase its existing holding in the Vale
debentures. The debentures consist of a 1.8% net revenue royalty over Vale’s
Northern System and Southeastern System iron ore assets in Brazil, as well as
a 1.25% royalty over the Sossego copper mine. The iron ore assets are world
class given their grade, cost position, infrastructure and resource life which
is well in excess of 50 years. We believe that the duration of the future
income stream, the exposure to high grade iron ore and attractive current
yield, make this a compelling long-term investment.  Prior to this
transaction, the Company had a 0.5% position in the Vale debentures, with
total exposure equal to 3.0% as at the end of June.

Vale’s tragic tailings dam incident at the beginning of the year has
significantly altered the iron ore market with the iron ore price rallying
over 30% since the event. Vale is expected to spend several billion US dollars
restoring the communities and environment impacted by the incident. However,
it is important to note that this cost is not borne by the debentures as it is
a revenue royalty with payments directly linked to the iron ore price which
has appreciated during the first half of the year. It is also important to
highlight that the operations impacted by the incident are in the Southern and
Southeastern System, with the Vale debentures currently only making royalty
payments from the Northern System. Vale has indicated that it is studying
increasing production at the Northern System to further increase
dry-processing operations and reduce its usage of tailings dams which provides
additional upside to our original expectations.

In 2018 payments made by Vale under the debentures amounted to US$161.2
million. This payment is expected to grow once royalty payments commence on
the Southeastern System in 2023 and volumes from the newly commissioned iron
ore project S11D continue to ramp-up. Vale’s Northern System is currently
producing at 200Mt and forecast to grow to 230Mt once S11D ramps-up (with
further upside to this number), while the Southeastern System is currently
operating at ~70Mt and is expected to remain around this level. The Northern
System has benefited from the rise in premiums for high grade iron ore in
recent years with the debentures directly exposed to this.

Whilst the Vale debentures are a royalty, they are also a listed security on
the Brazilian National Debentures System. However, shareholders should be
aware that historically there has been a low level of liquidity in the
debentures and price volatility is to be expected. We continue to actively
look for opportunities to grow royalty exposure given it is a key
differentiator of the Company and an effective mechanism to lock-in long-term
income which further diversifies the Company’s revenues.

DERIVATIVES ACTIVITY
The Company from time to time enters into derivatives contracts, mostly
involving the sale of “puts” and “calls”. These are taken to revenue
and are subject to strict Board guidelines which limit their magnitude to an
aggregate 10% of the portfolio. In the first half of 2019 income generated
from options was £3.2 million net of contracts repurchased. We follow the
disciplined approach to only making use of option contracts where there is
value to be had from writing them. Given the volatile period, this has played
out well with nearly all the contracts expiring worthless or have provided an
intra period chance to rewrite on better terms. At the end of the period the
Company had 1.3% of the net assets exposed to derivatives and the average
exposure to derivatives during the period was once again less than 5%.

GEARING
At 30 June 2019 the Company had £114.3 million of debt, with a net gearing
level of 9.4%. The debt is held principally in US dollar rolling short-term
loans and managed against the value of the debt securities in the Company.
During the period we have gradually reduced the total indebtedness as debt
instruments have matured or alternative opportunities have arisen. Given the
low multiples that companies are trading on, shareholders should expect debt
levels to remain around current levels in order to enable ongoing investment
in the equity portfolio of the Company.

OUTLOOK
Unlike the last two years, 2019 to date has delivered a strong period of
returns despite the ongoing macro headwinds on trade, monetary policy and
political risks. Whilst we do not expect these issues to be resolved in the
short term, we remain very confident on the underlying fundamentals of the
companies in the sector. Management continue to be disciplined, balance sheets
are generally very strong, free cash flow yields are high, cost inflation is
low and shareholders continue to be rewarded with rising dividends. On the
back of this we plan to keep the Company fully invested and make use of the
gearing facilities at our disposal.

It is important that shareholders are aware that the Company continues to back
core themes, as mentioned earlier, ahead of pure commodity views. It is our
expectation that this will allow the Company to deliver a superior total
return for its shareholders through the cycle from a combination of capital
growth and a premium yield to that generally available from the mining sector.

EVY HAMBRO and OLIVIA MARKHAM
BLACKROCK INVESTMENT MANAGEMENT (UK) LIMITED
20 August 2019

PORTFOLIO

TEN LARGEST INVESTMENTS AS AT 30 JUNE 2019

BHP: 11.0% (2018: 12.3%) The world’s largest diversified mining company by
market capitalisation. The company is an important global player in a number
of commodities including iron ore, copper, thermal and metallurgical coal,
manganese, nickel, silver and diamonds. The company also has significant
interests in oil, gas and liquefied natural gas.

Rio Tinto(1): 10.1% (2018: 10.0%) One of the world’s leading mining
companies. The company’s primary product is iron ore, but it also produces
aluminium, copper, diamonds, gold, industrial minerals and energy products.

Vale(2,3): 8.5% (2018: 8.7%) One of the largest mining companies in the world,
with operations in 30 countries. Vale is the world’s largest producer of
iron ore and iron ore pellets and the world’s largest producer of nickel.
The company also produces manganese ore, ferroalloys, metallurgical and
thermal coal, copper, platinum group metals, gold, silver and cobalt.

Newmont Mining: 5.0% (2018: 2.6%) Following the acquisition of Goldcorp in the
first half of 2019, Newmont is the world’s largest gold producer by market
capitalisation. The company has gold and copper operations on five continents,
with active gold mines in Nevada, Australia, Ghana, Peru and Suriname.

First Quantum Minerals(2): 4.3% (2018: 6.2%) An established and rapidly
growing copper mining company operating seven mines and developing five
projects worldwide. The company is a significant copper producer and also
produces nickel, gold and zinc.

Teck Resources: 4.2% (2018: 4.9%) A world leader in metallurgical coal
production, with an 8% share of the global seaborne coking coal market. The
company is also the world’s third-largest zinc concentrate producer and one
of the world’s largest zinc metal refiners. Teck is a major producer of
copper and also produces gold, lead, molybdenum and various other metal
products. Teck owns a 21.3% interest in the Fort Hills oil sands project,
which entered commercial production in 2018.

OZ Minerals(3,4): 4.0% (2018: 4.5%) An Australian based copper & gold producer
currently producing from its Prominent Hill operation in Australia and remains
on track to achieve first production in Q4 2019 at its Carrapateena copper
gold mine. Following OZ Minerals’ acquisition of Avanco Resources in 2018,
the Company’s exposure to OZ Minerals is both to the equity and a
contractual royalty.

Barrick Gold: 3.7% (2018: nil(5)) Following the merger with Randgold Resources
in 2018, Barrick Gold is the second largest gold company by market
capitalisation and has operations and projects in 15 countries across the
world. In 2019 the company successfully established a joint venture with
Newmont Mining both companies' Nevada assets to maximize the synergies across
both sets of assets.

Glencore: 3.2% (2018: 7.9%) A diversified miner with activities in mining,
smelting, refining, processing and marketing of metals and minerals, energy
products and agricultural products globally. Since mid-2015 the company has
been focused on rapidly deleveraging its balance sheet, with net debt falling
from US$26 billion (December 2015) to a targeted range of US$10-16 billion, to
provide greater balance sheet strength and flexibility going forward.

Agnico Eagle Mines: 3.2% (2018: 1.3%) A Canadian based gold company with mines
in Canada, Finland and Mexico, with exploration activities in each of these
countries as well as in the United States and Sweden. Agnico Eagle has a
strong operational track-record and has declared a cash dividend every year
since 1983.

All percentages reflect the value of the holding as a percentage of total
investments. Percentages in brackets represent the value of the holding as at
31 December 2018. Together, the ten largest investments represent 57.2% of
total investments (31 December 2018: 63.1%).

(1)     Includes options.

(2)     Includes fixed income securities.

(3)     Includes investments held at Directors’ valuation.

(4)     Includes mining royalty contract.

(5)     Excludes a 2.3% holding in Randgold Resources as at 31 December
2018. Randgold Resources and Barrick Gold merged in early 2019.

PORTFOLIO ANALYSIS AS AT 30 JUNE 2019

Commodity Exposure¹

                                     BlackRock                 BlackRock                   EMIX  
                        World Mining Trust plc    World Mining Trust plc    Global Mining Index  
                                           2019                  2018 (#)                   2019 
 Iron Ore                                  0.1%                      0.1%                   2.1% 
 Molybdenum                                0.1%                      0.0%                   0.1% 
 Aluminium                                 0.1%                      0.9%                   3.5% 
 Zinc                                      0.3%                      0.9%                   0.5% 
 Nickel                                    0.7%                      0.4%                   2.4% 
 Other                                     0.7%                      0.8%                   2.0% 
 Coal                                      1.6%                      0.7%                   4.8% 
 Industrial Minerals                       5.9%                      6.6%                   1.4% 
 Silver & Diamonds                         6.0%                      6.4%                   2.7% 
 Copper                                   18.5%                     18.9%                   7.3% 
 Gold                                     21.7%                     15.5%                  29.8% 
 Diversified                              44.3%                     48.8%                  43.4% 

Geographic Exposure(2)

                    2019                    2018 (#) 
 Global            65.4%   Global              60.0% 
 Australasia (3)   10.9%   Latin America       12.4% 
 Latin America     10.5%   Australia           10.9% 
 Canada             6.9%   Canada               7.4% 
 Other (4)          3.4%   Africa (ex SA)       4.5% 
 Africa (ex SA)     1.8%   Other (5)            3.3% 
 South Africa       1.1%   South Africa         1.5% 

(1)    Based on index classifications.

(2)   Based on the principal commodity exposure and place of operation of
each investment.

(3 )    Australasia was previously reported as Australia.

(4)     Consists of China, Indonesia, Kazakhstan, Russia and USA.

(5)    Consists of Indonesia, Kazakhstan, Russia, Turkey and USA.

(#)     Represents exposure as at 31 December 2018.

Source: BlackRock.

INVESTMENTS AS AT 30 JUNE 2019

                                                                  Main                Market                  % of  
                                                          geographical                 value            investments 
                                                               exposure               (£’000)                       
 Diversified                                                                                                        
 BHP                                                             Global                93,694                  11.0 
 Rio Tinto                                                       Global                85,695                  10.1 
 Rio Tinto Call Option 19/07/19 £48                              Global                 (337)                     – 
 Vale                                                            Global                47,062                   5.5 
 Vale 0% debentures#*                                            Global                25,203                   3.0 
 Teck Resources                                                  Global                35,508                   4.2 
 Glencore                                                        Global                27,423                   3.2 
 Volcan II*                                                      Global                21,628                   2.5 
 Anglo American                                                  Global                17,936                   2.1 
 Lundin Mining                                                   Global                15,149                   1.8 
 South32                                                         Global                 7,890                   0.9 
                                                                         --------------------  -------------------- 
                                                                                      376,851                  44.3 
                                                                         --------------------  -------------------- 
 Gold                                                                                                               
 Newmont Mining                                                  Global                42,296                   5.0 
 Barrick Gold                                                    Global                31,249                   3.7 
 Agnico Eagle Mines                                              Canada                27,326                   3.2 
 Northern Star Resources                                    Australasia                23,125                   2.7 
 Newcrest Mining                                            Australasia                17,611                   2.1 
 Franco-Nevada                                                   Global                16,609                   1.9 
 B2Gold                                                          Canada                 5,968                   0.7 
 Polyus                                                          Russia                 4,822                   0.6 
 Alamos Gold                                              Latin America                 3,724                   0.4 
 TMAC Resources                                                  Canada                 3,563                   0.4 
 Centamin                                                  Other Africa                 3,423                   0.4 
 Pretium Resources                                               Canada                 3,410                   0.4 
 Shanta Gold Convertible*                                  Other Africa                 1,455                   0.2 
 Carawine Resources+                                        Australasia                    31                     – 
                                                                         --------------------  -------------------- 
                                                                                      184,612                  21.7 
                                                                         --------------------  -------------------- 
 Copper                                                                                                             
 First Quantum Minerals*                                         Global                36,859                   4.3 
 OZ Minerals Brazil Royalty#~                             Latin America                18,297                   2.1 
 OZ Minerals                                                Australasia                16,006                   1.9 
 Sociedad Minera Cerro Verde                              Latin America                25,912                   3.0 
 Ero Copper                                               Latin America                20,383                   2.4 
 KAZ Minerals                                                Kazakhstan                 8,270                   1.0 
 Ivanhoe Mines                                             Other Africa                 7,644                   0.9 
 Nevada Copper#                                                     USA                 7,361                   0.9 
 Freeport-McMoRan Copper & Gold                                  Global                 4,893                   0.6 
 SolGold                                                  Latin America                 4,642                   0.6 
 Antofagasta                                              Latin America                 3,717                   0.4 
 Katanga Mining                                            Other Africa                 1,834                   0.2 
 Sierra Metals                                            Latin America                 1,816                   0.2 
                                                                         --------------------  -------------------- 
                                                                                      157,634                  18.5 
                                                                         --------------------  -------------------- 
 Silver & Diamonds                                                                                                  
 Wheaton Precious Metals                                         Global                19,563                   2.3 
 Mountain Province Diamonds*                                     Canada                16,809                   2.0 
 Fresnillo                                                Latin America                 6,110                   0.7 
 Industrias Penoles                                       Latin America                 4,294                   0.5 
 Petra Diamonds*                                           South Africa                 2,833                   0.4 
 MAG Silver                                               Latin America                 1,055                   0.1 
                                                                         --------------------  -------------------- 
                                                                                       50,664                   6.0 
                                                                         --------------------  -------------------- 
 Industrial Minerals                                                                                                
 Iluka Resources                                            Australasia                15,711                   1.9 
 Umicore                                                         Global                12,855                   1.5 
 Pilgangoora*                                               Australasia                 8,723                   1.0 
 Albemarle                                                       Global                 7,190                   0.9 
 Sheffield Resources                                        Australasia                 3,728                   0.4 
 Cobalt27 Capital                                                Global                   983                   0.1 
 Neo Lithium                                              Latin America                   782                   0.1 
 Nemaska Lithium+                                                Canada                     3                     – 
 Australian Carbon                                          Australasia                     –                     – 
                                                                         --------------------  -------------------- 
                                                                                       49,975                   5.9 
                                                                         --------------------  -------------------- 
 Coal                                                                                                               
 Whitehaven Coal                                                 Global                 6,622                   0.8 
 Coronado Global Resources                                  Australasia                 6,514                   0.8 
                                                                         --------------------  -------------------- 
                                                                                       13,136                   1.6 
                                                                         --------------------  -------------------- 
 Nickel                                                                                                             
 Nickel Mines                                                 Indonesia                 5,663                   0.7 
 Bindura Nickel                                            Other Africa                   257                     – 
                                                                         --------------------  -------------------- 
                                                                                        5,920                   0.7 
                                                                         --------------------  -------------------- 
 Zinc                                                                                                               
 Osisko Metals+                                                  Canada                 1,499                   0.2 
 Titan Mining                                                       USA                 1,417                   0.1 
                                                                         --------------------  -------------------- 
                                                                                        2,916                   0.3 
                                                                         --------------------  -------------------- 
 Aluminium                                                                                                          
 Metro Mining                                               Australasia                 1,065                   0.1 
                                                                         --------------------  -------------------- 
                                                                                        1,065                   0.1 
                                                                         --------------------  -------------------- 
 Molybdenum                                                                                                         
 China Molybdenum                                                 China                 1,060                   0.1 
                                                                         --------------------  -------------------- 
                                                                                        1,060                   0.1 
                                                                         --------------------  -------------------- 
 Iron Ore                                                                                                           
 Equatorial Resources                                      Other Africa                   463                   0.1 
                                                                         --------------------  -------------------- 
                                                                                          463                   0.1 
                                                                         --------------------  -------------------- 
 Other                                                                                                              
 Impala Platinum                                           South Africa                 6,304                   0.7 
                                                                         --------------------  -------------------- 
                                                                                        6,304                   0.7 
                                                                         --------------------  -------------------- 
 Portfolio                                                                            850,600                 100.0 
                                                                                 ============          ============ 
                                                                                                                    
 Comprising:                                                                                                        
 – Investments                                                                        850,937                 100.0 
 – Derivative financial instruments (written option)                                    (337)                     – 
                                                                         --------------------  -------------------- 
                                                                                      850,600                 100.0 
                                                                                 ============          ============ 

*     Includes fixed income securities.

#     Includes investments held at Directors’ valuation.

~     Includes mining royalty contract.

+     Includes warrant investments.

All investments are in equity shares unless otherwise stated.

The total number of investments as at 30 June 2019 (including options
classified as liabilities on the balance sheet) was 62 (31 December 2018: 65).

As at 30 June 2019 the Company held equity interests in three companies
comprising more than 3% of a company’s share capital as follows: Osisko
Metals, Sheffield Resources and Titan Mining.

GOVERNANCE

INTERIM MANAGEMENT REPORT AND RESPONSIBILITY STATEMENT

The Chairman’s Statement and the Investment Manager’s Report give details
of the important events which have occurred during the period and their impact
on the financial statements.

PRINCIPAL RISKS AND UNCERTAINTIES

The principal risks faced by the Company can be divided into various areas as
follows:

•               Counterparty;

•               Investment performance;

•               Legal & Compliance;

•               Market;

•               Operational;

•               Financial;

•               Marketing; and

•               Securities lending

The Board reported on the principal risks and uncertainties faced by the
Company in the Annual Report and Financial Statements for the year ended 31
December 2018. A detailed explanation can be found in the Strategic Report on
pages 32 to 35 and note 18 on pages 85 to 102 of the Annual Report and
Financial Statements which is available on the website maintained by
BlackRock, at www.blackrock.co.uk/brwm.

In the view of the Board, there have not been any changes to the fundamental
nature of these risks since the previous report and these principal risks and
uncertainties are equally applicable to the remaining six months of the
financial year as they were to the six months under review.

GOING CONCERN
The Directors, having considered the nature and liquidity of the portfolio,
the Company’s investment objective and the Company’s projected income and
expenditure, are satisfied that the Company has adequate resources to continue
in operational existence for the foreseeable future and is financially sound.
For this reason, they continue to adopt the going concern basis in preparing
the financial statements. The Company has a portfolio of investments which are
predominantly readily realisable and is able to meet all of its liabilities
from its assets and income generated from these assets. Ongoing charges
(excluding finance costs, transaction costs and taxation) for the year ended
31 December 2018 were approximately 0.93% of net assets.

RELATED PARTY DISCLOSURE AND TRANSACTIONS WITH THE AIFM AND INVESTMENT MANAGER
BlackRock Fund Managers Limited (BFM) was appointed as the Company’s
Alternative Investment Fund Manager (AIFM) with effect from 2 July 2014. BFM
has (with the Company’s consent) delegated certain portfolio and risk
management services, and other ancillary services, to BlackRock Investment
Management (UK) Limited (BIM UK). Both BFM and BIM (UK) are regarded as
related parties under the Listing Rules. Details of the management and
marketing fees payable are set out in notes 4 and 5 respectively and note 11.

The related party transactions with the Directors are set out in note 12.

DIRECTORS’ RESPONSIBILITY STATEMENT
The Disclosure Guidance and Transparency Rules (DTR) of the UK Listing
Authority require the Directors to confirm their responsibilities in relation
to the preparation and publication of the Interim Management Report and
Financial Statements.

The Directors confirm to the best of their knowledge that:
* the condensed set of financial statements contained within the half yearly
financial report has been prepared in accordance with International Accounting
Standard 34 ‘Interim Financial Reporting’; and
* the Interim Management Report, together with the Chairman’s Statement and
Investment Manager’s Report, include a fair review of the information
required by 4.2.7R and 4.2.8R of the FCA’s Disclosure Guidance and
Transparency Rules.
This half yearly financial report has been reviewed by the Company’s
auditors.

The half yearly financial report was approved by the Board on 20 August 2019
and the above responsibility statement was signed on its behalf by the
Chairman.

DAVID CHEYNE
FOR AND ON BEHALF OF THE BOARD
20 August 2019

FINANCIAL STATEMENTS

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME FOR THE SIX MONTHS ENDED 30
JUNE 2019

                                                                                                             Notes                               Revenue £’000                                                              Capital £’000                                                             Total £’000                               
                                                                                                                                     Six months ended                                                           Six months ended                                                           Six months ended                                     
                                                                                              30.06.19 (unaudited)  30.06.18 (unaudited)  Year ended 31.12.18 (audited)  30.06.19 (unaudited)  30.06.18 (unaudited)  Year ended 31.12.18 (audited)  30.06.19 (unaudited)  30.06.18 (unaudited)  Year ended 31.12.18 (audited) 
 Income from investments held at fair value through profit or loss                                               3                20,677                         16,257                32,049                     –                              –                     –                20,677                         16,257            32,049 
 Other income                                                                                                    3                 3,100                          3,032                 6,145                     –                              –                     –                 3,100                          3,032             6,145 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Total income                                                                                                                     23,777                         19,289                38,194                     –                              –                     –                23,777                         19,289            38,194 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Net profit/(loss) on investments and derivatives held at fair value through profit or loss                                            –                              –                     –                98,159                       (12,915)             (112,935)                98,159                       (12,915)         (112,935) 
 Net loss on foreign exchange                                                                                                          –                              –                     –                 (214)                        (1,994)               (4,754)                 (214)                        (1,994)           (4,754) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Total                                                                                                                            23,777                         19,289                38,194                97,945                       (14,909)             (117,689)               121,722                          4,380          (79,495) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Expenses                                                                                                                                                                                                                                                                                                                                       
 Investment management fees                                                                                      4                 (793)                          (768)               (1,454)               (2,491)                        (2,414)               (4,587)               (3,284)                        (3,182)           (6,041) 
 Other operating expenses                                                                                        5                 (517)                          (509)               (1,025)                   (8)                            (7)                  (14)                 (525)                          (516)           (1,039) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Total operating expenses                                                                                                        (1,310)                        (1,277)               (2,479)               (2,499)                        (2,421)               (4,601)               (3,809)                        (3,698)           (7,080) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Net profit/(loss) on ordinary activities before finance costs and taxation                                                       22,467                         18,012                35,715                95,446                       (17,330)             (122,290)               117,913                            682          (86,575) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Finance costs                                                                                                   6                 (471)                          (357)                 (798)               (1,404)                        (1,066)               (2,369)               (1,875)                        (1,423)           (3,167) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Net profit/(loss) on ordinary activities before taxation                                                                         21,996                         17,655                34,917                94,042                       (18,396)             (124,659)               116,038                          (741)          (89,742) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Taxation                                                                                                                        (1,836)                        (1,262)               (2,904)                   697                            915                 1,559               (1,139)                          (347)           (1,345) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Profit/(loss) for the period                                                                                    8                20,160                         16,393                32,013                94,739                       (17,481)             (123,100)               114,899                        (1,088)          (91,087) 
                                                                                                                        ----------------               ----------------      ----------------      ----------------               ----------------      ----------------      ----------------               ----------------  ---------------- 
 Earnings/(loss) per ordinary share (pence)                                                                      8                 11.43                           9.29                 18.15                 53.73                         (9.91)               (69.78)                 65.16                         (0.62)           (51.63) 
                                                                                                                              ==========                     ==========            ==========            ==========                     ==========            ==========            ==========                     ==========        ========== 

The total column of this statement represents the Group’s Consolidated
Statement of Comprehensive Income, prepared in accordance with International
Financial Reporting Standards (IFRS), as adopted by the European Union (EU).
The supplementary revenue and capital columns are both prepared under guidance
published by the Association of Investment Companies (AIC). All items in the
above statement derive from continuing operations. No operations were acquired
or discontinued during the period. All income is attributable to the equity
holders of the Group.

The net profit/(loss) for the period disclosed above represents the Group’s
total comprehensive income/(loss). The Group does not have any other
comprehensive income.

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY FOR THE SIX MONTHS ENDED 30 JUNE
2019

                                                          Note     Called up share capital £’000     Share premium account £’000     Capital redemption reserve £’000     Special reserve £’000     Capital reserves £’000     Revenue reserves £’000       Total £’000 
 For the six months ended 30 June 2019 (unaudited)                                                                                                                                                                                                                      
 At 31 December 2018                                                                       9,651                         127,155                               22,779                   114,147                    373,301                     38,562           685,595 
 Total comprehensive income:                                                                                                                                                                                                                                            
 Net profit for the period                                                                     –                               –                                    –                         –                     94,739                     20,160           114,899 
 Transactions with owners, recorded directly to equity:                                                                                                                                                                                                                 
 Dividends paid ((a))                                        7                                 –                               –                                    –                         –                          –                   (22,923)          (22,923) 
                                                                                ----------------                ----------------                     ----------------          ----------------           ----------------           ----------------  ---------------- 
 At 30 June 2019                                                                           9,651                         127,155                               22,779                   114,147                    468,040                     35,799           777,571 
                                                                                ----------------                ----------------                     ----------------          ----------------           ----------------           ----------------  ---------------- 
 For the six months ended 30 June 2018 (unaudited)                                                                                                                                                                                                                      
 At 31 December 2017                                                                       9,651                         127,155                               22,779                   114,589                    496,401                     34,072           804,647 
 Total comprehensive income:                                                                                                                                                                                                                                            
 Net (loss)/profit for the period                                                              –                               –                                    –                         –                   (17,481)                     16,393           (1,088) 
 Transactions with owners, recorded directly to equity:                                                                                                                                                                                                                 
 Dividends paid ((b))                                        7                                 –                               –                                    –                         –                          –                   (16,940)          (16,940) 
                                                                                ----------------                ----------------                     ----------------          ----------------           ----------------           ----------------  ---------------- 
 At 30 June 2018                                                                           9,651                         127,155                               22,779                   114,589                    478,920                     33,525           786,619 
                                                                                ----------------                ----------------                     ----------------          ----------------           ----------------           ----------------  ---------------- 
 For the year ended 31 December 2018 (audited)                                                                                                                                                                                                                          
 At 31 December 2017                                                                       9,651                         127,155                               22,779                   114,589                    496,401                     34,072           804,647 
 Total comprehensive income:                                                                                                                                                                                                                                            
 Net (loss)/profit for the year                                                                –                               –                                    –                         –                  (123,100)                     32,013          (91,087) 
 Transactions with owners, recorded directly to equity:                                                                                                                                                                                                                 
 Ordinary shares purchased into treasury                                                       –                               –                                    –                     (439)                          –                          –             (439) 
 Share purchase costs                                                                          –                               –                                    –                       (3)                          –                          –               (3) 
 Dividends paid ((c))                                        7                                 –                               –                                    –                         –                          –                   (27,523)          (27,523) 
                                                                                ----------------                ----------------                     ----------------          ----------------           ----------------           ----------------  ---------------- 
 At 31 December 2018                                                                       9,651                         127,155                               22,779                   114,147                    373,301                     38,562           685,595 
                                                                                      ==========                      ==========                           ==========                ==========                 ==========                 ==========        ========== 

(a)   The final dividend for the year ended 31 December 2018 of 9.00p per
share, declared on 28 February 2019 and paid on 10 May 2019 and 1st quarterly
interim dividend for the year ended 31 December 2019 of 4.00p per share,
declared on 2 May 2019 and paid on 28 June 2019.

(b)   The final dividend for the year ended 31 December 2017 of 6.60p per
share, declared on 26 February 2018 and paid on 10 May 2018 and 1st quarterly
interim dividend for the year ended 31 December 2018 of 3.00p per share,
declared on 25 April 2018 and paid on 29 June 2018.

(c)   The final dividend of 6.60p per share for the year ended 31 December
2017, declared on 26 February 2018 and paid on 10 May 2018; 1st interim
dividend of 3.00p per share for the year ended 31 December 2018, declared on
25 April 2018 and paid on 29 June 2018; 2nd interim dividend of 3.00p per
share for the year ended 31 December 2018, declared on 17 August 2018 and paid
on 21 September 2018; and 3rd interim dividend of 3.00p per share for the year
ended 31 December 2018, declared on 8 November 2018 and paid on 21 December
2018.

The transaction costs relating to the acquisition and disposal of investments
amounted to £309,000 and £198,000 respectively for the six months ended 30
June 2019 (six months ended 30 June 2018: £294,000 and £104,000; year ended
31 December 2018: £471,000 and £246,000). All transaction costs have been
included within the capital reserve.

The share premium account and capital redemption reserve are not distributable
profits under the Companies Act 2006. The special reserve may be used as
distributable profits for all purposes and, in particular, for the repurchase
by the Company of its ordinary shares and for payment as dividends. In
accordance with the Company’s articles, net capital reserves may be
distributed by way of dividend.

CONSOLIDATED STATEMENT OF FINANCIAL POSITION AS AT 30 JUNE 2019

                                                                              Notes     30 June 2019 £’000 (unaudited)     30 June 2018 £’000 (unaudited)     31 December 2018 £’000 (audited) 
 Non current assets                                                                                                                                                                            
 Investments held at fair value through profit or loss                           10                            850,937                            903,361                              778,526 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Current assets                                                                                                                                                                                
 Other receivables                                                                                               5,585                              2,097                                2,326 
 Cash collateral held with brokers                                                                               1,144                                678                                  650 
 Cash and cash equivalents                                                                                      39,888                             11,501                               35,501 
                                                                                                      ----------------                   ----------------                     ---------------- 
                                                                                                                46,617                             14,276                               38,477 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Total assets                                                                                                  897,554                            917,637                              817,003 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Current liabilities                                                                                                                                                                           
 Other payables                                                                                                (5,238)                           (13,770)                             (16,725) 
 Derivative financial liabilities held at fair value through profit or loss      10                              (337)                              (236)                                (312) 
 Bank overdraft                                                                                                      –                            (5,905)                                    – 
 Bank loans                                                                                                  (114,288)                          (110,892)                            (114,221) 
                                                                                                      ----------------                   ----------------                     ---------------- 
                                                                                                             (119,863)                          (130,803)                            (131,258) 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Total assets less current liabilities                                                                         777,691                            786,834                              685,745 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Non current liabilities                                                                                                                                                                       
 Deferred taxation liability                                                                                     (120)                              (215)                                (150) 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Net assets                                                                                                    777,571                            786,619                              685,595 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Equity attributable to equity holders                                                                                                                                                         
 Called up share capital                                                          9                              9,651                              9,651                                9,651 
 Share premium account                                                                                         127,155                            127,155                              127,155 
 Capital redemption reserve                                                                                     22,779                             22,779                               22,779 
 Special reserve                                                                                               114,147                            114,589                              114,147 
 Capital reserves                                                                                              468,040                            478,920                              373,301 
 Revenue reserves                                                                                               35,799                             33,525                               38,562 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Total equity                                                                                                  777,571                            786,619                              685,595 
                                                                                                      ----------------                   ----------------                     ---------------- 
 Net asset value per ordinary share (pence)                                       8                             440.97                             445.79                               388.81 
                                                                                                            ==========                         ==========                           ========== 

CONSOLIDATED CASH FLOW STATEMENT FOR THE SIX MONTHS ENDED 30 JUNE 2019

                                                                                                                           Six months ended 30 June 2019 £’000 (unaudited)     Six months ended 30 June 2018 £’000 (unaudited)     Year ended 31 December 2018 £’000 (audited) 
 Operating activities                                                                                                                                                                                                                                                          
 Net profit/(loss) on ordinary activities before taxation                                                                                                          116,038                                               (741)                                        (89,742) 
 Add back finance costs                                                                                                                                              1,875                                               1,423                                           3,167 
 Net (profit)/loss on investments and options held at fair value through profit or loss (including transaction costs)                                             (98,159)                                              12,915                                         113,315 
 Net loss on foreign exchange                                                                                                                                          214                                               1,994                                           4,754 
 Sales of investments and derivatives held at fair value through profit or loss                                                                                    215,998                                             102,315                                         235,980 
 Purchases of investments and derivatives held at fair value through profit or loss                                                                              (190,008)                                           (112,480)                                       (221,634) 
 (Increase)/decrease in other receivables                                                                                                                            (321)                                                 370                                           (119) 
 (Decrease)/increase in other payables                                                                                                                               (122)                                               1,676                                         (1,889) 
 (Increase)/decrease in amounts due from brokers                                                                                                                   (2,907)                                                 100                                             360 
 (Decrease)/increase in amounts due to brokers                                                                                                                    (11,632)                                               7,320                                          13,639 
 Net movement in cash collateral held with brokers                                                                                                                   (494)                                               1,305                                           1,333 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Net cash inflow from operating activities before interest and taxation                                                                                             30,482                                              16,197                                          59,164 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Taxation paid                                                                                                                                                       (659)                                               (558)                                           (969) 
 Taxation on investment income included within gross income                                                                                                          (495)                                               (314)                                           (765) 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Net cash inflow from operating activities                                                                                                                          29,328                                              15,325                                          57,430 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Financing activities                                                                                                                                                                                                                                                          
 Drawdown of loans                                                                                                                                                       –                                              20,000                                          20,000 
 Interest paid                                                                                                                                                     (1,871)                                             (1,423)                                         (3,167) 
 Shares purchased into treasury                                                                                                                                          –                                                   –                                           (439) 
 Share purchase costs paid                                                                                                                                               –                                                   –                                             (3) 
 Dividends paid                                                                                                                                                   (22,923)                                            (16,940)                                        (27,523) 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Net cash (outflow)/inflow from financing activities                                                                                                              (24,794)                                               1,637                                        (11,132) 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Increase in cash and cash equivalents                                                                                                                               4,534                                              16,962                                          46,298 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Cash and cash equivalents at start of the period                                                                                                                   35,501                                            (11,556)                                        (11,556) 
 Effect of foreign exchange rate changes                                                                                                                             (147)                                                 190                                             759 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Cash and cash equivalents at end of period                                                                                                                         39,888                                               5,596                                          35,501 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
 Comprised of:                                                                                                                                                                                                                                                                 
 Cash at bank                                                                                                                                                       39,888                                              11,501                                          35,501 
 Bank overdraft                                                                                                                                                          –                                             (5,905)                                               – 
                                                                                                                                                          ----------------                                    ----------------                                ---------------- 
                                                                                                                                                                    39,888                                               5,596                                          35,501 
                                                                                                                                                                ==========                                          ==========                                      ========== 

NOTES TO THE FINANCIAL STATEMENTS FOR THE SIX MONTHS ENDED 30 JUNE 2019

1. PRINCIPAL ACTIVITY
The principal activity of the Company is that of an investment trust company
within the meaning of section 1158 of the Corporation Tax Act 2010.

The principal activity of the subsidiary, BlackRock World Mining Investment
Company Limited, is investment dealing.

2. BASIS OF PREPARATION
The half yearly financial statements for the period ended 30 June 2019 have
been prepared in accordance with the Disclosure Guidance and Transparency
Rules sourcebook of the Financial Conduct Authority and with IAS 34 Interim
Financial Reporting, as adopted by the European Union. The half yearly
financial statements should be read in conjunction with the Company’s Annual
Report and Financial Statements for the year ended 31 December 2018, which
have been prepared in accordance with International Financial Reporting
Standards (IFRS) as adopted by the European Union (EU) and as applied in
accordance with the provisions of the Companies Act 2006) and in accordance
with International Accounting Standard 34, ‘Interim Financial Reporting’.

Insofar as the Statement of Recommended Practice (SORP) for investment trust
companies and venture capital trusts issued by the Association of Investment
Companies (AIC), issued in November 2014 and updated in February 2018 is
compatible with IFRS, the financial statements have been prepared in
accordance with guidance set out in the SORP.

The taxation charge has been calculated by applying an estimate of the annual
effective tax rate to any profit for the period.

Adoption of new and amended standards and interpretations

IFRS 16 Leases
The Company adopted IFRS 16 as of the date of initial application of 1 January
2019. IFRS 16 specifies accounting for leases and removes the distinction
between operating and finance leases. This standard is not applicable to the
Company as it has no leases.

IFRIC 23 Uncertainty over Income Tax Treatments
The Company adopted IFRIC 23 as of the date of initial application of 1
January 2019. IFRIC 23 seeks to provide clarity on how to account for
uncertainty over income tax treatments and specifies that an entity must
consider whether it is probable that the relevant tax authority will accept
each tax treatment, or group of tax treatments, that it plans to use in its
income tax filing. The interpretation also requires companies to reassess the
judgements and estimates applied if facts and circumstances change. The
interpretation would require the Company to recognise uncertain tax positions
which are more than probable within its financial statements.

3. INCOME

                                                           Six months ended 30 June 2019 £’000 (unaudited)     Six months ended 30 June 2018 £’000 (unaudited)     Year ended 31 December 2018 £’000 (audited) 
 Investment income:                                                                                                                                                                                            
 UK dividends                                                                                        4,660                                               5,940                                          10,806 
 UK special dividends                                                                                3,283                                                   -                                               - 
 Overseas dividends                                                                                  4,584                                               5,987                                          12,245 
 Overseas special dividends                                                                          1,663                                                 266                                             396 
 Income from contractual rights (OZ Minerals Royalty)                                                  795                                               1,219                                           2,294 
 Income from Vale debentures                                                                         2,252                                                 143                                             277 
 Fixed income                                                                                        3,440                                               2,702                                           6,031 
                                                                                          ----------------                                    ----------------                                ---------------- 
                                                                                                    20,677                                              16,257                                          32,049 
                                                                                          ----------------                                    ----------------                                ---------------- 
 Other income:                                                                                                                                                                                                 
 Option premium income                                                                               3,166                                               2,963                                           6,129 
 Deposit interest                                                                                       56                                                   7                                              36 
 Underwriting commission                                                                                 –                                                   –                                             188 
 Stock lending income                                                                                   56                                                  62                                             172 
 Loss on investment dealing                                                                          (178)                                                   –                                           (380) 
                                                                                          ----------------                                    ----------------                                ---------------- 
                                                                                                     3,100                                               3,032                                           6,145 
                                                                                          ----------------                                    ----------------                                ---------------- 
 Total income                                                                                       23,777                                              19,289                                          38,194 
                                                                                                ==========                                          ==========                                      ========== 

During the period the Group received option premium income totalling
£3,002,000 (six months ended 30 June 2018: £2,755,000; year ended 31
December 2018: £5,874,000) for writing put and covered call options for the
purposes of revenue generation. Option premiums of £3,166,000 (six months
ended 30 June 2018: £2,963,000; year ended 31 December 2018: £6,129,000)
were amortised to income. At 30 June 2019 there was 1 open position (30 June
2018: 2; 31 December 2018: 2) with an associated liability of £337,000 (30
June 2018: £236,000; 31 December 2018: £312,000).

Dividends and interest received in cash in the six months ended 30 June 2019
amounted to £14,366,000 and £4,312,000 (six months ended 30 June 2018:
£12,835,000 and £2,606,000 and year ended 31 December 2018: £23,675,000 and
£6,060,000) respectively.

Special dividends of £5,229,000 have been recognised in capital for the six
months ended 30 June 2019 (six months ended 30 June 2018: £nil; year ended 31
December 2018: £nil).

4. INVESTMENT MANAGEMENT FEE

                                 Six months ended 30 June 2019 (unaudited)           Six months ended 30 June 2018 (unaudited)             Year ended 31 December 2018 (audited)        
                                Revenue £’000     Capital £’000     Total £’000     Revenue £’000     Capital £’000     Total £’000     Revenue £’000     Capital £’000     Total £’000 
 Investment management fee                793             2,491           3,284               768             2,414           3,182             1,454             4,587           6,041 
                                   ==========        ==========      ==========        ==========        ==========      ==========        ==========        ==========      ========== 

The investment management fee (which includes all services provided by
BlackRock) is 0.8% of the Company’s net assets. However, in the event that
the NAV per share increases on a quarter-on-quarter basis, the fee will then
be paid on gross assets for the quarter. During the period £2,948,000 (30
June 2018: £2,971,000; 31 December 2018: £5,830,000) of the investment
management fee was generated from net assets and £336,000 (30 June 2018:
£211,000; 31 December 2018: £211,000) from the gearing effect on gross
assets due to the quarter-on-quarter increase in the NAV per share for the
period as below:

 Quarter end        Cum income NAV per share (pence)  Quarterly increase/ (decrease) %     Gearing effect on management fees (£’000) 
 31 December 2018                             388.81                                                                                 
 31 March 2019                                422.80                              +8.7                                           188 
 30 June 2019                                 440.97                              +4.3                                           148 
                                          ==========                        ==========                                    ========== 

The average of the net assets under management during the period ended 30 June
2019 was £727,181,000 (30 June 2018: £787,211,000; 31 December 2018:
£755,993,000).

The fee is allocated 25% to the revenue column and 75% to the capital column
of the Consolidated Statement of Comprehensive Income.

5. OTHER OPERATING EXPENSES

                                       Six months ended 30 June 2019 £’000 (unaudited)     Six months ended 30 June 2018 £’000 (unaudited)     Year ended 31 December 2018 £’000 (audited) 
 Allocated to revenue:                                                                                                                                                                     
 Custody fee                                                                        55                                                  68                                             127 
 Auditors’ remuneration:                                                                                                                                                                   
 – audit services                                                                   18                                                  15                                              33 
 – other assurance services                                                          6                                                   6                                               7 
 Registrar’s fee                                                                    42                                                  42                                              87 
 Directors’ emoluments                                                              95                                                 108                                             221 
 AIC fees                                                                           11                                                  10                                              20 
 Broker fees                                                                        11                                                  12                                              25 
 Depositary fees                                                                    34                                                  44                                              88 
 FCA fee                                                                             9                                                   9                                              18 
 Directors’ liability insurance                                                      7                                                  12                                              22 
 Marketing fees                                                                     61                                                  73                                             139 
 Stock exchange fees                                                                10                                                   9                                              19 
 Legal and professional fees                                                        38                                                  21                                              67 
 Printing fees                                                                      22                                                  11                                              22 
 Bank facility fees                                                                 38                                                  36                                              72 
 Other administration costs                                                         60                                                  33                                              58 
                                                                      ----------------                                    ----------------                                ---------------- 
                                                                                   517                                                 509                                           1,025 
                                                                      ----------------                                    ----------------                                ---------------- 
 Allocated to capital:                                                                                                                                                                     
 Custody transaction charges                                                         8                                                   7                                              14 
                                                                      ----------------                                    ----------------                                ---------------- 
                                                                                   525                                                 516                                           1,039 
                                                                            ==========                                          ==========                                      ========== 

6. FINANCE COSTS

                                            Six months ended 30 June 2019 (unaudited)             Six months ended 30 June 2018 (unaudited)               Year ended 31 December 2018 (audited)         
                                          Revenue £’000     Capital £’000       Total £’000     Revenue £’000     Capital £’000       Total £’000     Revenue £’000     Capital £’000       Total £’000 
 Interest on bank loans                             470             1,402             1,872               340             1,016             1,356               779             2,312             3,091 
 Interest payable – bank overdraft                    1                 2                 3                17                50                67                19                57                76 
                                       ----------------  ----------------  ----------------  ----------------  ----------------  ----------------  ----------------  ----------------  ---------------- 
 Total                                              471             1,404             1,875               357             1,066             1,423               798             2,369             3,167 
                                             ==========        ==========        ==========        ==========        ==========        ==========        ==========        ==========        ========== 

Finance costs are charged 25% to the revenue column and 75% to the capital
column of the Consolidated Statement of Comprehensive Income.

7. DIVIDENDS
The final dividend of 9.00p per share for the year ended 31 December 2018 was
paid on 10 May 2019. The Board has declared a first quarterly interim dividend
of 4.00p per share for the quarter ended 31 March 2019, paid on 28 June 2019
to shareholders on the register on 31 May 2019. Dividends are debited
directly to reserves.

The Board has declared a second quarterly interim dividend of 4.00p per share
for the quarter ended 30 June 2019 which will be paid on 1 October 2019 to
shareholders on the register on 30 August 2019. This dividend has not been
accrued in the financial statements for the six months ended 30 June 2019 as,
under IFRS, interim dividends are not recognised until paid.

Dividends on equity shares paid during the period were:

                                                                                                             Six months ended 30 June 2019 £’000 (unaudited)     Six months ended 30 June 2018 £’000 (unaudited)     Year ended 31 December 2018 £’000 (audited) 
 Final dividend for the year ended 31 December 2018 of 9.00p per share (2017: 6.60p)                                                                  15,870                                              11,646                                          11,646 
 First quarterly interim dividend for the year ending 31 December 2019 of 4.00p per share (2018: 3.00p)                                                7,053                                               5,294                                           5,294 
 Second quarterly interim dividend for the year ended 31 December 2018 of 3.00p per share (2017: 3.00p)                                                    –                                                   –                                           5,293 
 Third quarterly interim dividend for the year ended 31 December 2018 of 3.00p per share (2017: 3.00p)                                                     –                                                   –                                           5,290 
                                                                                                                                            ----------------                                    ----------------                                ---------------- 
                                                                                                                                                      22,923                                              16,940                                          27,523 
                                                                                                                                                  ==========                                          ==========                                      ========== 

8. CONSOLIDATED EARNINGS AND NET ASSET VALUE PER ORDINARY SHARE
Total revenue and capital returns per share are shown below and have been
calculated using the following:

                                                                                                                                                 Six months ended 30 June 2019 (unaudited)  Six months ended 30 June 2018 (unaudited)  Year ended 31 December 2018 (audited) 
 Net revenue profit attributable to ordinary shareholders (£’000)                                                                                                                   20,160                                     16,393                                 32,013 
 Net capital profit/(loss) attributable to ordinary shareholders (£’000)                                                                                                            94,739                                   (17,481)                              (123,100) 
                                                                                                                                                                       -------------------                        -------------------                    ------------------- 
 Total profit/(loss) attributable to ordinary shareholders (£’000)                                                                                                                 114,899                                    (1,088)                               (91,087) 
                                                                                                                                                                       -------------------                        -------------------                    ------------------- 
 Equity shareholders’ funds (£’000)                                                                                                                                                777,571                                    786,619                                685,595 
                                                                                                                                                                       -------------------                        -------------------                    ------------------- 
 The weighted average number of ordinary shares in issue during each period, on which the return per ordinary share was calculated was:                                        176,330,242                                176,455,242                            176,426,789 
                                                                                                                                                                       -------------------                        -------------------                    ------------------- 
 The actual number of ordinary shares in issue (excluding treasury shares) at the period end, on which the net asset value was calculated was:                                 176,330,242                                176,455,242                            176,330,242 
                                                                                                                                                                       -------------------                        -------------------                    ------------------- 
 Returns per share                                                                                                                                                                                                                                                           
 Revenue earnings per share (pence)                                                                                                                                                  11.43                                       9.29                                  18.15 
 Capital earnings/(loss) per share (pence)                                                                                                                                           53.73                                     (9.91)                                (69.78) 
                                                                                                                                                                       -------------------                        -------------------                    ------------------- 
 Total earnings/(loss) per share (pence)                                                                                                                                             65.16                                     (0.62)                                (51.63) 
                                                                                                                                                                               ===========                                ===========                            =========== 

   

                                              As at 30 June 2019 (unaudited)  As at 30 June 2018 (unaudited)  As at 31 December 2018 (audited) 
 Net asset value per ordinary share (pence)                           440.97                          445.79                            388.81 
                                                         -------------------             -------------------               ------------------- 
 Ordinary share price (pence)                                         375.50                          386.50                            340.50 
                                                                 ===========                     ===========                       =========== 

9. CALLED UP SHARE CAPITAL

                                                               Ordinary shares (number)  Treasury shares (number)  Total shares (number)     Nominal value £’000 
 Allotted, called up and fully paid share capital comprised:                                                                                                     
 Ordinary shares of 5 pence each:                                                                                                                                
 At 31 December 2018 and 30 June 2019                                       176,330,242                16,681,600            193,011,842                   9,651 
                                                                            ===========               ===========            ===========             =========== 

During the period to 30 June 2019, no ordinary shares were issued, purchased
or cancelled (six months ended 30 June 2018: nil; year ended 31 December 2018:
125,000 shares were bought back and transferred to treasury for a total
consideration of £442,000).

Since 30 June 2019 and up to the date of this report, 33,766 ordinary shares
have been repurchased for a total consideration of £129,000.

10. VALUATION OF FINANCIAL INSTRUMENTS
Financial assets and financial liabilities are either carried in the
Consolidated Statement of Financial Position at their fair value (investment
and derivatives) or at an amount which is a reasonable approximation of fair
value (due from brokers, dividends and interest receivable, due to brokers,
accruals, cash at bank and bank overdrafts). IFRS 13 requires the Group to
classify fair value measurements using a fair value hierarchy that reflects
the significance of inputs used in making the measurements. The valuation
techniques used by the Group are explained in the accounting policies note
2(h), as set out in the Group’s Annual Report and Financial Statements for
the year ended 31 December 2018.

Categorisation within the hierarchy has been determined on the basis of the
lowest level input that is significant to the fair value measurement of the
relevant asset as follows.

The fair value hierarchy has the following levels:

Level 1 – Quoted prices for an identical instrument in an active market.
A financial instrument is regarded as quoted in an active market if quoted
prices are readily and regularly available from an exchange, dealer, broker,
industry group, pricing service, or regulatory agency, and those prices
represent actual and regularly occurring market transactions on an arm’s
length basis. The Group does not adjust the quoted price for these
instruments.

Level 2 – Valuation techniques using observable inputs.
This category includes instruments valued using quoted prices for similar
instruments in markets that are considered less than active, or other
valuation techniques where all significant inputs are directly or indirectly
observable from market data. Valuation techniques used for non-standardised
financial instruments such as options, currency swaps and other
over-the-counter derivatives include the use of comparable recent arm’s
length transactions, reference to other instruments that are substantially the
same, discounted cash flow analysis, option pricing models and other valuation
techniques commonly used by market participants making the maximum use of
market inputs and relying as little as possible on entity specific inputs.

Level 3 – Valuation techniques using significant unobservable inputs.
This category includes all instruments where the valuation technique includes
inputs not based on observable market data and these inputs could have a
significant impact on the instrument’s valuation.

This category includes instruments that are valued based on quoted prices for
similar instruments where significant entity determined adjustments or
assumptions are required to reflect differences between the instruments and
instruments for which there is no active market. The Investment Manager
considers observable data to be that market data that is readily available,
regularly distributed or updated, reliable and verifiable, not proprietary,
and provided by independent sources that are actively involved in the relevant
market.

The level in the fair value hierarchy within which the fair value measurement
is categorised in its entirety is determined on the basis of the lowest level
input that is significant to the fair value measurement. Assessing the
significance of a particular input to the fair value measurement in its
entirety requires judgement, considering factors specific to the asset or
liability.

Assessing the significance of a particular input to the fair value measurement
in its entirety requires judgement, considering factors specific to the asset
or liability. The determination of what constitutes ‘observable’ inputs
requires significant judgement by the Investment Manager.

Over-the-counter derivative option contracts have been classified as Level 2
investments as their valuation has been based on market observable inputs
represented by the underlying quoted securities to which these contracts
expose the Group.

The table below sets out fair value measurements using the IFRS 13 fair value
hierarchy.

 Financial assets/(liabilities) at fair value through profit or loss at 30 June 2019 (unaudited)         Level 1 £’000        Level 2 £’000        Level 3 £’000          Total £’000 
 Assets:                                                                                                                                                                              
 Equity investments                                                                                            730,953                3,492                    –              734,445 
 Fixed income securities                                                                                        72,992               25,203                    –               98,195 
 Investment in contractual rights                                                                                    –                    –               18,297               18,297 
                                                                                                   -------------------  -------------------  -------------------  ------------------- 
                                                                                                               803,945               28,695               18,297              850,937 
                                                                                                   -------------------  -------------------  -------------------  ------------------- 
 Liabilities:                                                                                                                                                                         
 Derivative financial instruments – written options                                                                  –                (337)                    –                (337) 
                                                                                                   -------------------  -------------------  -------------------  ------------------- 
                                                                                                               803,945               28,358               18,297              850,600 
                                                                                                           ===========          ===========          ===========          =========== 

   

 Financial assets/(liabilities) at fair value through profit or loss at 30 June 2018 (unaudited)         Level 1 £’000        Level 2 £’000        Level 3 £’000          Total £’000 
 Assets:                                                                                                                                                                              
 Equity investments                                                                                            806,595                  509                    –              807,104 
 Fixed income securities                                                                                        73,952                3,158                    –               77,110 
 Investment in contractual rights                                                                                    –                    –               19,147               19,147 
                                                                                                   -------------------  -------------------  -------------------  ------------------- 
                                                                                                               880,547                3,667               19,147              903,361 
                                                                                                   -------------------  -------------------  -------------------  ------------------- 
 Liabilities:                                                                                                                                                                         
 Derivative financial instruments – written options                                                                  –                (236)                    –                (236) 
                                                                                                   -------------------  -------------------  -------------------  ------------------- 
                                                                                                               880,547                3,431               19,147              903,125 
                                                                                                           ===========          ===========          ===========          =========== 

   

 Financial assets/(liabilities) at fair value through profit or loss at 31 December 2018 (audited)         Level 1 £’000        Level 2 £’000        Level 3 £’000          Total £’000 
 Assets:                                                                                                                                                                                
 Equity investments                                                                                              676,645                6,101                    –              682,746 
 Fixed income securities                                                                                          74,017                3,250                    –               77,267 
 Investment in contractual rights                                                                                      –                    –               18,513               18,513 
                                                                                                     -------------------  -------------------  -------------------  ------------------- 
                                                                                                                 750,662                9,351               18,513              778,526 
                                                                                                     -------------------  -------------------  -------------------  ------------------- 
 Liabilities:                                                                                                                                                                           
 Derivative financial instruments – written options                                                                    –                (312)                    –                (312) 
                                                                                                     -------------------  -------------------  -------------------  ------------------- 
                                                                                                                 750,662                9,039               18,513              778,214 
                                                                                                             ===========          ===========          ===========          =========== 

A reconciliation of fair value measurement in Level 3 is set out below.

 Level 3 Financial assets at fair value through profit or loss                                                               Six months ended 30 June 2019 £’000 (unaudited)     Six months ended 30 June 2018 £’000 (unaudited)     Year ended 31 December 2018 £’000 (audited) 
 Opening fair value                                                                                                                                                   18,513                                              18,943                                          18,943 
 Return of capital – royalty                                                                                                                                           (225)                                               (286)                                           (674) 
 Total gains or losses included in gains/(losses) on investments in the Consolidated Statement of Comprehensive Income:                                                                                                                                                          
 – assets held at the end of the period                                                                                                                                    9                                                 490                                             244 
                                                                                                                                                         -------------------                                 -------------------                             ------------------- 
 Closing balance                                                                                                                                                      18,297                                              19,147                                          18,513 
                                                                                                                                                                 ===========                                         ===========                                     =========== 

The Level 3 investments as at 30 June 2019 in the table below relate to the OZ
Minerals Royalty and, in accordance with IFRS 13, this investment was
categorised as Level 3. In arriving at the fair value of these investments,
the key inputs are the underlying commodity prices and illiquidity discount.

The Level 3 valuation process and techniques used by the Company are explained
in the accounting policies in notes 2(h) and 2(p) and a detailed explanation
of the techniques is also available on page 99 under “valuation process and
techniques” in the Company’s Annual Report and Financial Statements for
the year ended 31 December 2018.

Quantitative information of significant unobservable inputs – Level 3

                                 Six months ended 30 June 2019 £’000 (unaudited)     Six months ended 30 June 2018 £’000 (unaudited)     Year ended 31 December 2018 £’000 (audited)    Valuation technique                                                                  Unobservable input 
 OZ Minerals Brazil Royalty                                               18,297                                              19,147                                          18,513  Discounted cash flows    Discount rate – weighted average cost of capital  Average gold and copper prices 

Sensitivity analysis to significant changes in unobservable inputs within
Level 3 hierarchy
The significant unobservable inputs used in the fair value measurement
categorised within Level 3 of the fair value hierarchy, together with an
estimated quantitative sensitivity analysis, as at 30 June 2019 are as shown
below.

                                                                           Input  Estimated sensitivity used*  Impact on fair value 
 OZ Minerals Brazil Royalty     Discount rate – weighted average cost of capital                           1%                 £2.3m 
                                                  Average gold and copper prices                          10%                 £3.5m 

*     The sensitivity analysis refers to a percentage amount added or
deducted from the input and the effect this has on the fair value.

The sensitivity impact on fair value is calculated based on the sensitivity
estimates set out by the independent valuer in its report on the valuation of
contractual rights. Significant increases/(decreases) in estimated commodity
prices and discount rates in isolation would result in a significantly
higher/(lower) fair value measurement. Generally, a change in the assumption
made for the estimated value is accompanied by a directionally similar change
in commodity prices and discount rates.

11. TRANSACTIONS WITH THE AIFM AND THE INVESTMENT MANAGER
BlackRock Fund Managers Limited (BFM) is the Company’s Alternative
Investment Fund Manager (AIFM). BFM has (with the Company’s consent)
delegated certain portfolio and risk management services, and other ancillary
services, to BlackRock Investment Management (UK) Limited (BIM (UK)).

The investment management fee due to BFM for the six months ended 30 June 2019
amounted to £3,284,000 (six months ended 30 June 2018: £3,182,000; year
ended 31 December 2018: £6,041,000). At the period end, £1,656,000 was
outstanding in respect of the investment management fee (six months ended 30
June 2018: £4,896,000; year ended 31 December 2018: £1,359,000).

In addition to the above services, BlackRock has provided the Company with
marketing services. The total fees paid or payable for these services for the
period ended 30 June 2019 amounted to £61,000 excluding VAT (six months ended
30 June 2018: £73,000; year ended 31 December 2018: £139,000). Marketing
fees of £74,000 were outstanding as at 30 June 2019 (30 June 2018: £73,000;
31 December 2018: £69,000). The marketing fees will be deducted from the
management fee payable to BlackRock such that the total fee will not exceed
0.80% of gross assets.

12. RELATED PARTY DISCLOSURE: DIRECTORS’ EMOLUMENTS
The Board consists of five non-executive Directors, all of whom are considered
to be independent of the Manager by the Board. None of the Directors has a
service contract with the Company. The Chairman receives an annual fee of
£45,000, the Chairman of the Audit & Management Engagement Committee/Senior
Independent Director receives an annual fee of £37,500 and each of the other
Directors receives an annual fee of £30,000.

As at 30 June 2019 no amounts (30 June 2018: £nil: 31 December 2018:
£16,875) were outstanding in respect of Directors’ fees.

At the period end members of the Board, including any connected persons, held
ordinary shares in the Company as set out below:

                  Ordinary shares 
 David Cheyne¹             24,000 
 Colin Buchan²             29,000 
 Russell Edey              20,000 
 Jane Lewis                 5,362 
 Judith Mosely              7,400 
                                  

(1)Chairman.

(2)Chairman of the Audit & Management Engagement Committee and Senior
Independent Director.

Since the period end and up to the date of this report there have been no
changes in Directors’ holdings.

13. CONTINGENT LIABILITIES
There were no contingent liabilities at 30 June 2019 (six months ended 30 June
2018: nil; year ended 31 December 2018: nil).

14. PUBLICATION OF NON-STATUTORY ACCOUNTS
The financial information contained in this half yearly report does not
constitute statutory accounts as defined in section 435 of the Companies Act
2006. The financial information for the six months ended 30 June 2019 and 30
June 2018 has been reviewed by the Company’s auditors.

The information for the year ended 31 December 2018 has been extracted from
the latest published audited financial statements, which have been filed with
the Registrar of Companies, unless otherwise stated. The report of the
auditors on those accounts contained no qualification or statement under
sections 498(2) or (3) of the Companies Act 2006.

15. ANNUAL RESULTS
The Board expects to announce the annual results for the year ending 31
December 2019, as prepared under IFRS, in February 2020.

Copies of the results announcement can be obtained from the Secretary on 020
7743 3000 or at cosec@blackrock.com. The Annual Report should be available by
the beginning of March 2020, with the Annual General Meeting being held in
April 2020.

INDEPENDENT REVIEW REPORT TO BLACKROCK WORLD MINING TRUST PLC

REPORT ON THE FINANCIAL STATEMENTS

Our conclusion
We have reviewed BlackRock World Mining Trust plc’s financial statements
(the ‘interim financial statements’) in the Half Yearly Financial Report
of BlackRock World Mining Trust plc for the six month period ended 30 June
2019. Based on our review, nothing has come to our attention that causes us to
believe that the interim financial statements are not prepared, in all
material respects, in accordance with International Accounting Standard 34,
‘Interim Financial Reporting’, as adopted by the European Union and the
Disclosure Guidance and Transparency Rules sourcebook of the United
Kingdom’s Financial Conduct Authority.

What we have reviewed
The interim financial statements comprise:

•        the consolidated statement of financial position as at 30
June 2019;

•        the consolidated statement of comprehensive income for the
period then ended;

•        the consolidated cash flow statement for the period then
ended;

•        the consolidated statement of changes in equity for the
period then ended; and

•        the explanatory notes to the interim financial statements.

The interim financial statements included in the Half Yearly Financial Report
have been prepared in accordance with International Accounting Standard 34,
‘Interim Financial Reporting’, as adopted by the European Union and the
Disclosure Guidance and Transparency Rules sourcebook of the United
Kingdom’s Financial Conduct Authority.

As disclosed in note 2 to the interim financial statements, the financial
reporting framework that has been applied in the preparation of the full
annual financial statements of the Group is applicable law and International
Financial Reporting Standards (IFRSs) as adopted by the European Union.

RESPONSIBILITIES FOR THE INTERIM FINANCIAL STATEMENTS AND THE REVIEW

Our responsibilities and those of the Directors
The Half Yearly Financial Report, including the interim financial statements,
is the responsibility of, and has been approved by, the Directors. The
Directors are responsible for preparing the Half Yearly Financial Report in
accordance with the Disclosure Guidance and Transparency Rules sourcebook of
the United Kingdom’s Financial Conduct Authority.

Our responsibility is to express a conclusion on the interim financial
statements in the Half Yearly Financial Report based on our review. This
report, including the conclusion, has been prepared for and only for the
Company for the purpose of complying with the Disclosure Guidance and
Transparency Rules sourcebook of the United Kingdom’s Financial Conduct
Authority and for no other purpose. We do not, in giving this conclusion,
accept or assume responsibility for any other purpose or to any other person
to whom this report is shown or into whose hands it may come save where
expressly agreed by our prior consent in writing.

What a review of interim financial statements involves
We conducted our review in accordance with International Standard on Review
Engagements (UK and Ireland) 2410, ‘Review of Interim Financial Information
Performed by the Independent Auditor of the Entity’ issued by the Auditing
Practices Board for use in the United Kingdom. A review of interim financial
information consists of making enquiries, primarily of persons responsible for
financial and accounting matters, and applying analytical and other review
procedures.

A review is substantially less in scope than an audit conducted in accordance
with International Standards on Auditing (UK) and, consequently, does not
enable us to obtain assurance that we would become aware of all significant
matters that might be identified in an audit. Accordingly, we do not express
an audit opinion.

We have read the other information contained in the Half Yearly Financial
Report and considered whether it contains any apparent misstatements or
material inconsistencies with the information in the interim financial
statements.

PRICEWATERHOUSECOOPERS LLP
CHARTERED ACCOUNTANTS
LONDON
20 August 2019

ENDS

The half yearly financial report will also be available on the BlackRock
website at blackrock.co.uk/brwm. Neither the contents of the Manager’s
website nor the contents of any website accessible from hyperlinks on the
Manager’s website (or any other website) is incorporated into, or forms part
of, this announcement.

For further information, please contact:

Simon White, Co-head of Closed End Funds, BlackRock Investment Management (UK)
Limited -
Tel: 020 7743 5284

Evy Hambro, Fund Manager, BlackRock Investment Management (UK) Limited –
Tel: 020 7743 3000

Press enquiries:

Lucy Horne, Lansons Communications – Tel:  020 7294 3689
E-mail:  lucyh@lansons.com

12 Throgmorton Avenue
London EC2N 2DL
 

20 August 2019



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