Shadong Energy I think Yang worked for these guys:
Coal
Shadong Energy owns 29 mines.[1] In 2011, the company mined 108.2 million metric tonnes of coal and is planning to produce 120 million metric tonnes in 2012. In addition to the production in China, the company is developing a coal mine in British Columbia, Canada, and plans to expand to Australia, Burma, and Cambodia.[5] In March 2012, the companies subsidiary Linyi Mining Group made a take-over bid for Australian coal company Rocklands Richfield.[6][7]
In the Yining mining area, the companies subsidiary Xinwen Mining Group together with Australian Linc Energy has planned to develop a coal gasification project with a capacity of 2 billion cubic metres (71 billion cubic feet) of syngas per year.[8][9]
The company's subsidiary Longkou Mining Group is the only company in China mining coal beneath the seabed.[10][11] The mining is carried out at the Beizao Underwater Coal Mine in Bohai Bay to the north of Shandong Peninsula