Part 1 Comprehensive Gas Control Technology Gas Control and Utilization in Huainan Mining Area YUAN Liang Status Quo of and Countermeasures for Gas Outburst in Coal Mines of China FU Jianhua & CHENG Yuanping Gas Drainage in High Efficiency Workings in German Coal Mines Joachim BRANDT Overview of the JCOAL Project on Safety Hirofumi FURUKAWA Integrated Approach&nb