3Experimental Study of Influence of Obstacle Object upon Propagation of Gas and Coal-dust Explosion Flame6-8
9Inquiring and Analysis on Establishment of Long-effect Mechanism for Safe Production in Coal Mines19-20,28
11Establishment and Operation of Occupational Safety and Health Management System in Xuzhuang Coal Mine24-25
12Problems Existing in Classified Garbage Collection in Main Urban Area of Chongqing and Countermeasures26-28
14Probing into Optimization and Potential-tapping of Ventilation System in Mine with Difficult Ventilation31-33
16Cause Analysis of Roadway Destruction around Shaft Bottom of Yueliangtian Mine and Countermeasures36-38
18Real Gas Seeping Pressure Equation around Holes along Seam and Analysis on Its Three-dimensional Values41-43