1Application of Methane Diffusion Law Mathematical Model of Coal ParticleFU Xiang, WANG kui-jun, YANG Hong-wei, HE Xiao-dongTest and Research1-32Study on Gas Concentration Distribution Rules in Goaf of Room and Pillar Working FaceJIANG Wen-zhong, QIN Yu-jin, ZHANG LiangTest and Research4-63Gas Controlling during Initial Stage of Production by High Position Roadway in Full-mechanized Sublevel Caving FaceTechnology Experiences7-94Sensibility of Coal Drilling Cutting Gas Desorption Index △h2 about Outburst and It's Critical Value in Panyi Coal MineCAO Yao-lin, QIU Hai-sheng, WANG Zhi-quanTechnology Experiences10-125Analysis of Rules of Coal and Gas Outburst and Controlling Factors in Hebi Mine AreaTechnology Experiences13-166Comprehensive Controlling Technology of Coal Seam Spontaneous Combustion in Shendong Mine AreaYOU Wen-shun, QI Zhong-liTechnology Experiences16-197Application of Underground Mobile Nitrogen Injection Engine in Treatment of Explosive Fire DistrictZHAO Xin, LI Xiao-yu, MA Xian-binTechnology Experiences20-218Application of ZB Type Automatic Air Door in Xiaokang Coal MineTechnology Experiences22-239Application of Extinguishing Fire Technology Using CO2 in 8903down Face of Xizhouyao Coal MineKANG Fu-junTechnology Experiences24-2610Application of Bolt and Anchor Cable Combined Supporting in Heavy Section RoadwayTIAN XingTechnology Experiences26-2711Ordovician Limestone Water Disaster in Gaocheng Coal Mine and Comprehensive Controlling TechnologyTechnology Experiences28-2912Mining Usability Evaluation on Coal Seam Geological Condition of Coal Face Based on BP Neural NetworkLI Shu-yan, ZHANG Dong-xuTechnology Experiences30-3213Safety Technology of Coal Column Recovery in 2303 Coal Face of Sihe Coal MineZHAO JunTechnology Experiences33-3414Technology Analysis on Roof Fall Accident when Stope Face Crossing Fault and Prevention MeasurementDONG LiTechnology Experiences35-3615Airshaft Comprehensive Parameters Safety Monitoring and Controlling System Based on Wireless Transmitter-receiverWU Yong-xiang, CAO Zhen-guan, WU PanTechnology Experiences37-3816Design of Mine Emergency Rescue Command Car System and ApplicationFU Wen-jun, CHEN Hao-minTechnology Experiences39-4117Discussion on Some Methods for Online Testing Electric Appliance Temperature RiseQIN YanTechnology Experiences42-4418Application of Liquid Crystal Display Module in Coal Mine Safety Production Monitoring and Controlling ManufactureMA Li-juanTechnology Experiences45-4719Occurrence Character of Rock Mass Gas in Coal Measure StrataCHEN Da-liIssue Discussion48-49,6920Technology Difficulty of Frequency Conversion Transformation for Controlling System of Mine Main Hoist and SolutionJI Qing-yaIssue Discussion50-53 