1. State Key Laboratory of Coal Resources and Safe Mining School of Mines China University of Mining and Technology Xuzhou China
2. State Key Laboratory Coal Mine Disaster Dynamic & Control Chongqing University Chongqing China
3. State Key Laboratory Cultivation Base for Gas Geology and Gas Control Henan Polytechnic University Jiaozuo China
4. Henan Key Laboratory for Green and Efficient Mining & Comprehensive Utilization of Mineral Resources Henan Polytechnic University Jiaozuo China
5. Chongqing Vocational Institute of Safety & Technology Chongqing China
6. Department of Civil, Environmental and Natural Resources Engineering Lulea University of Technology Luleå Sweden