** Hong Kong shares of coal miner Yankuang Energy Group Co Ltd...

** Hong Kong shares of coal miner Yankuang Energy Group Co Ltd 1171.HK jump 5.8% to HK$26.50, highest since June 2011

** Stock set for the biggest daily pct gain since May 20, on track for third consecutive session of gain; second-biggest pct gainer in Hang Seng Composite Index on energy stocks .HSCIE

** Yankuang's Shanghai shares 600188.SS rise 3.2% to 39.17 yuan, highest since April 15

** Co says it plans to increase its shareholdings in Yancoal Australia (YAL) 3668.HK in a deal to be settled by issuance of bonds convertible into the company's H-share

** Says the plan is subject to approval from shareholders, relevant China and overseas governmental and regulatory bodies

** Says the plan may result in withdrawal of listing of Yancoal shares from the Hong Kong Stock Exchange and the Australian Securities Exchange

** Trading in Yancoal shares in Hong Kong and in Australia was suspended on Thursday morning pending statement

** Hang Seng Composite Index tracking energy stocks .HSCIE and the material index .HSCIM both climb 0.6%, while Hang Seng Index .HSI slips 0.1%

** As of last close, Yankuang's Hong Kong shares had surged 61.6% this year, while Yancoal's Hong Kong stocks soared 99.1%