** Shares of gold and silver producer Sumatra Copper & Gold
plc SUM.AX fall as much as 5.3 pct to A$0.018
** Company says it suspended mining at Tembang gold-silver
operation in southern Sumatra, Indonesia urn:newsml:reuters.com:*:nFWN1T20XZ
** Company lowers 2018 production guidance to 37,500 –
42,500 ounces of gold equivalent (oz AuEq) from 45,000 - 55,000
oz AuEq, due to the suspension
** About 337,000 mln shares change hands, compared with the
30-day average of 288,698 shares
** Stock up 26.7 pct this year as of Thursday's close
(aditya.srivastsav.thomsonreuters.com@reuters.net)