7Application of Grouting Transformation Technology for Water - containing Seam in Jiaozuo Coal Mining District19-21
14Probe into the Coal Bed Methane Content and Methane Emission Rate Based on Methane Geological Drawings36-37
17Status and Development for Methane Comprehensive Controlling in Pingdingshan Coal Mining Group42-44
20Grasping the Chances and Strengthening Works to Realize the Inversion of Small Scale Coal Mine49-52