1Current Status and Development of Mine Radio CommunicationSpecial Edition of Papers in Symposium on Mine Radio Communication Technology1-32Radio Communication System for Mine Use and Its Project DesignSpecial Edition of Papers in Symposium on Mine Radio Communication Technology3-73Implementation of Monitoring and Control in Comprehensive Leakage Monitoring and Control SystemSpecial Edition of Papers in Symposium on Mine Radio Communication Technology84Mine Mobile Communication systemsHui Yantiao, Zhang Shengyi, Liu HongriSpecial Edition of Papers in Symposium on Mine Radio Communication Technology9-115Microcomputer Testing of Hoist Dynamic ParametersDing Dianlai, Jiao ShitongScientific and Research Achievements11-136Fault Diagnositc Expert System for Shearer Hydraulic SystemChen Daolin, Ling JiahangLab Research14-167Development of Comprehensive Testing Apparatus for Mine Fixed EquipmentYang Shixing, Xue ChaomeiLab Research17-188Research in A Type of Expert Model Algorithmic Control with No Static ErrorXue Yuncan, Huang GuomingLab Research19-229Study in New Method of Distance Measuring for Earth Fault in Power LinesLab Research22-2310Design of Microcomputer Integrated Protection Device for High Volt Asynchronous MotorLiu Jianhua, Mou Longhua, Wang ConglinTechnical Progress24-2511Intelligent Methane Alarmer with Speech BroadcastingYang Rui, Han Peng, Tao JianpingTechnical Progress26-2812Microcomputer Measuring and Control System Using Software Expansion to Record SpaceTechnical Progress28-2913Automatic Control System for Pipeline Water TreatmentTechnical Progress30-3114Improvement of Heat-Sealing MachineTechnical Progress3215Application of Programmable Controller in Electric Control System for Main Shaft Belt ConveyorSha ChenghongTechnical Exchange33-3516Comprehensive Auto-Measuring Apparatus for Vertical Shaft DeformationLi Chengqun, Xu Wenjun, Meng Qingyu, Huang PingTechnical Exchange35-3717Industrial Television Surveillance System of Two-Level ControlTechnical Exchange38-3918Examples of Small-Scaled Chinses Character Base Utilizing C and C++ File Function Self-DefinitionTechnical Exchange40-4119Production Dispatching Computer Network System of Xinji GroupTechnical Exchange42-4320Current Status and Prospects of DC Power Supply Converter for Mine Use LocomotivesTechnical Exchange43-44 