1Elementary Analysis of Surface Borehole Stability in Gob Area Methane DrainageLIANG Yun-pei, HU Qian-ting, GUO Hua, REN Ting-xiangTest and Research1-42Synthetic of Poly (Vinyl Acetate) Emulsion Used for Preventing Spontaneous Combustion of Coal and Study on Behaviour of ItWANG Li-qin, YANG Jing, WANG Zhen-hua, TAN Yun-zhenTest and Research5-7,143Research on Explosion-proof Soft Starter Used for Mining and Based on 87C196MC Single ChipCHENG Mo-qiang, SHI Zhao-yuanTest and Research8-114Application of Gas Drainage Technology by Down-over BoreholeTechnology Experiences12-145Application of Digital Analogue Methods to Forecast Gas Emission Volume of FaceTechnology Experiences15-176Technology of Fly Ash Auto-conveying of Earth Surface Pulping Station in Coal MineWANG Xu-youTechnology Experiences18-197Comprehensive Controlling of Gas and Coal Spontaneous Combustion during 7338 Face Disassembled in Kongzhuang Coal MineYAO Xiang-dongTechnology Experiences20-218Appraisal of Mine Megathermal ClimateTI Zheng-yi, MU Dan, ZHAO JieTechnology Experiences22-239Sealing Fire Zone Successfully by Mine Solidification Foam Closed Filling TechnologySUN Gui-liangTechnology Experiences24-2510Technology of Coal Spontaneous Combustion Prevention in Open Gob of Full-mechanized Sublevel CavingDONG Li-huaTechnology Experiences26-2811Discussion on Comprehensive Development and Utilization of Subsided Land of Coal Exploitation in Pangzhuang Mining ZoneDING Zhi-juan, ZHANG Bao-taiTechnology Experiences28-2912Mining Technology in 6# Coal SeamLIU Feng-xiangTechnology Experiences30-3213Support Design in Soft Rock RoadwayLI Zhi-qiang, ZHANG Hong-yanTechnology Experiences33-3514Application of Static Phase Advancer in Coal Mine VentilatorGUO LingTechnology Experiences35-3715Development of Catalyst to Eliminating CO for Gas MaskCHEN Hong-ping, LIANG Ying-huaTechnology Experiences38-4116Application of Import Frequency Converter in Coal Mine Mechanical and Electrical EquipmentZHAO Guang-dang, XIAO Yao-meng, WANG Jian-gangTechnology Experiences42-4417Probing into Models of Coal Bed Gas MiningIssue Discussion45-4818Status and Development Trends of Gas Drainage in Coal Mine of ChinaMA Pi-liangIssue Discussion48-5119Reasons and Controlling of Coal and Gas Outburst in 8th Coal Seam in NO.3 Coal Mine of PanjiCAO Si-hua, HE Shao-liIssue Discussion52-5420Feasibility Analysis of Gas Comprehensive Controlling in Abnormal Gas District of Low Gassy MineLIU Yao-ming, QI Jun-deIssue Discussion54-56 