** Shares of Australia's Latrobe Magnesium LMG.AX rise as much as 52.2% to A$0.035, their highest level since late-October 2024
** Stock posts its biggest intraday pct gain since July 22
** Specialty miner says following short-term delays in ash deliveries caused by storm conditions near Melbourne, completed operational start-up of Hazelwood North Demonstration Plant
** Adds co achieved production of magnesium oxide from the plant
** Nearly 7 mln shares change hands as of 0025 GMT, 2.4x the 30-day average volume
** Stock has risen 40% this year, including session gains
(Reporting by Roshan Thomas in Bengaluru)
((Roshan.Thomas@thomsonreuters.com))