** Shares of Yanzhou Coal Mining 1171.HK lead slide in Hong...

** Shares of Yanzhou Coal Mining 1171.HK lead slide in Hong Kong-listed Chinese coal stocks, falling as much as 12.4% to HK$13.30, the biggest daily pct drop since Oct. 5, 2020, as the Chinese government considers coal price intervention

** Stock sinks to lowest since Sept. 27; biggest pct decliner on Hang Seng Composite Index tracking energy stocks .HSCIE and second biggest loser on Hang Seng Composite Index .HSCI

** China's state planner said on Tuesday it was studying ways of intervening in high coal prices and would take all necessary measures to bring them back to reasonable range

** Hong Kong shares of China Coal 1898.HK drop as much as 8.5% to HK$5.35, biggest daily pct drop since Oct. 15

** China Shenhua Energy's 1088.HK Hong Kong stock dips 7.7% to HK$17.16, worst day since June 30

** Yanzhou Coal's unit Yancoal Australia (YAL) falls 7%

** Hang Seng Composite Index tracking energy stocks .HSCIE falls 2.7% while Hang Seng Composite Index .HSCI rises 1.04%

** The Hang Seng China Enterprises Index .HSCE climbs 1.6% and the benchmark index .HSI gains 1.3%