1Methods to Define Laneways Loose Zone of Tick Coal Seam with Enriched Gas and Spontaneous CombustionWANG Zhao-feng, YANG Li-ping, TIAN Kun-yun, MA Guo-longTest and Research1-32Application of BP Neural Network in Evaluation of Water Source in MineXU Zhong-jie, YANG Yong-guo, TANG LinTest and Research4-6,173Technology of Gas Drainage by Large Diameter Hole in Abdominal of GobHUANG ZhiTechnology Experiences7-104Identification of Major Dangerous Source of Gas Explosive and Risk Evaluation in Coal MineTechnology Experiences11-145Air Heating Scheme. In Coal Mine Vice-shaft in WinterGUO Lin, CHEN Zhao-yeTechnology Experiences15-176Supporting Matching Technology of Gob Side Entry Retaining for Y-type VentilationLI Yuan-hui, SUN Ye-yaoTechnology Experiences18-207Technology Innovation of Mine Ventilation System and Effect in No.2 Coal Mine of Pingdingshan Coal GroupLI Yao-min, XU Yan-weiTechnology Experiences20-228Water Detection and Release Safely in High Stress District of Isolated Island FaceTechnology Experiences23-259Plugging Technology of Water Bursting Site in Ordovician Limestone in Desheng Coal MineTechnology Experiences26-2710Rational Coal Column Sizes of High Mining Height Faces in Sihe Coal MineZHENG Shu-bingTechnology Experiences28-3011Application of T685WS Type Quick Drilling Machine in Coal Mine RescueTechnology Experiences31-3312Ground Subsidence Laws under Different Mining Conditions in Fengfeng Mining AreaTechnology Experiences33-3513Some Technology on Bolt SupportingGONG Shi-wen, ZHANG Sun-mingTechnology Experiences36-3914Discussion on Study and Development of Earth Leakage Protection TechnologyLU En-guiTechnology Experiences40-4415Wireless Communication and Location Check on Work Attendance System under Coal MineWANG Zi-junTechnology Experiences44-4716Discussion on Problem of Power Supply Source of Gas Monitoring and Controlling DevicesZHONG Xun-hong, ZHANG Wei-guo, GUO Zhi-qiangIssue Discussion48-51,6217Discussion on Problem of Power Supply Source of Gas Monitoring and Controlling Devices againIssue Discussion52-53,6718Test of Miner Working BurnoutLIU Jia-ying, LI Le, DING Wei-guoIssue Discussion54-5619Optimization Model of Safety InvestmentPENG Hong-jun, LI Xin-chunIssue Discussion57-5920Design of Coal Mine Safety Information Management System Based on Data WarehouseLI SaSafety Supervision and Management60-62 