1Attempt for Coal Mining under Railway Line of Coal Mine in Condition of Soft RockWANG Cheng-wu, ZHANG Hong1-22Design of the Safety Pillar when Working Across Over the Crosscut by Fully Mechanized Working FaceCHEN Feng, SUN Dun-yong3-43New Technical Point for Improvement of Ventilation System in Jiahe Coal Mine5-64Analysis and Judgement on the Connection of Three-Phase and Three Wire Electric MeterHUANG Jia-ping, WEI Zhen-yu, BIAN Zhao-xia6-7,145Application of the Conversion Speed Regulation in Fluid Supply System of Coal MineWANG Chen8-96Problems and Measures in Discharging of Pollution Matters of Industrial EnterprisesZHANG Ke10-117Design of Liuqiao High Efficiency Coal Processing PlantMA Yan, YU Hai-ying, CHEN Yu-shan12-148Increase of Operation Reliability of High-Pressure Power Supply System in the Fully Mechanized Working FaceLI Shi-yin, CHEN Jun15-169Discussion of Measuring Problem on the Constant Boundary of GyrotheodoliteZUO Hong-fei, ZHAO Li-wu17-1810Analysis of Burn-out Reason of Voltage Transformer in Non-Earth Electric Network at Neutral PointBU Fan-wen19-2111Results and Butting Method for Sublevel Mining of Fully Mechanized Working FaceSUN Li-ya24-2612Improvement and Association of Fully Mechanized Caving Equipment in "Three-Soft" Coal Seam of 4.5 m ThicknessWEI Shu-hui26-2813Application of the Online Monitoring Technique in Main Fan InstallationJIANG Xue-hua32-3314Practice of Advance Grouting in Front of Roadway Driving PlaceLI Zhi-min37-3915Analysis of a Fault Connection of Three-Phase and Three-Wire Electric MeterBIAN Zhao-xia, HUANG Jia-ping42-4416Settling the Problems of High Nitrogen and Low Oxygen in Comprehensive Way for Wiping out Personal-Asphyxiating AccidentLI Xiao-jun, HE Yi46-4717Knowledge of Unsafe Factors in Underground Blasting OperationZHOU Cheng-wu, Hu Dian-wen51-5318Comprehensive Prevention of Coal Self-Ignition in Fully Mechanized Caving Face at Isolated PillarLI Ru-chun53-5419On Quality Cost Management of Coal EnterprisesZHANG Hong-an59-61 