论文部分内容阅读
On February 22nd a large coalbed methaneexplosion happened at the Tunlan Coal Mineof Shanxi Coke Coal Group killed 74 workers.The provincial governor Wang Jun,formerDirector of the State Administration of Work
On February 22nd a large coalbed methaneexplosion happened at the Tunlan Coal Mine of Shanxi Coke Coal Group killed 74 workers. The provincial governor Wang Jun, former Director of the State Administration of Work