1Study of Hydraulic Transition in Drainage System of Super-Lift Submersible PumpFENG Li-jie, GAO Chuan-chang, ZHANG Jin-huaDesign and Research1-2,52Trolley Wire Carrier Communication System Based on Direct Sequential Spectrum SpreadingLI Wen-jiang, YAN Xiao-heng, LI TaoDesign and Research3-53Setter Design of Emergent Communication Equipment in MineHAO Ying-ji, YANG Xing, WANG Rong-gang, WANG Chang-qianDesign and Research6-7,104Design of Dynamic Monitoring System for Hoist RopeLU Xu-ge, FAN Yun-xiao, WU Ying-yingDesign and Research8-105Development of MG100/238-WD Electrical Haulage Shearer for Thin SeamZHANG Li-qiang, HUANG Guo-wangDesign and Research11-12,156Electromagnetic Compatibility Analysis of Mine Frequency ConverterPAN Tao, SUN Ji-ping, WANG Fu-zeng, MA Feng-yingDesign and Research13-157Design of Monitoring System for Small/Medium sized Impeller Coal FeederHU Jin-huaDesign and Research16-188The Calibrating Method of Power Vehicles TesterLIU Chen-yang, JIN Li-liDesign and Research18-209Simulation Research of Insulation Parameter On-line Monitoring for Mine Low Voltage CablesWANG Yan-wen, ZHAO Qiang, HUO Chu-nanDesign and Research21-2410Design of Intelligent Digital Monitor for Mine HoistJI Hai-ming, ZHAN Shi-fa, LIAO Yu-boDesign and Research25-2711Design of Main Transformer for Mine Silicon Controlled Electroplating Power Source EquipmentLIU Gui-hong, LI Xin-chunDesign and Research27-2912Design and Discussion of Miners Lamp without MaintenanceLIU Chun-jieIssue Discussion30-32,3513The Development of Safety Monitoring System for Small Coal MineCHEN Jia-liIssue Discussion33-3514Analysis of Distributing Law of Carbon Monoxide Dense in Conveyor Belt Fire ZoneGUO JianIssue Discussion36-38,4115The Status and Development of Safety Monitor and Control System for Coal MineZHAO Yan-ming, GAO Jun, YANG Guo-qing, LI Zhong-yuIssue Discussion39-4116Correct Solution of Natural Frequency and Damping Ratio of Valve Control Cylinder SystemLIU Chun-rongIssue Discussion42-4417Discussion on Prohibition of Normally-opened Slide-down Safeguard Devices in InclineMEI BingIssue Discussion44-4518The Application of Embedded System to New Type Charger for MineLI Jing-zhao, HAO Wei, ZHENG YuIssue Discussion46-4919Temperature Analysis of Disc Brake on Belt ConveyorFU Yang, JANG Wei-liang, LI Yun-HaiIssue Discussion49-5120Analysis of Emergency Rescue Shortest Path in Coal MineWANG Yu-kunIssue Discussion52-54,56 