1. School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China
2. Comprehensive Geological Exploration Team, Coal Geology Bureau of Xinjiang Uygur Autonomous Region, Urumchi, China
3. China National Adminstrative Coal Geology, Jiangsu Mineral Resources & Geol Design & Research Institute, Xuzhou, Jiangsu, China
4. Department of Energy and Power Engineering, Tsinghua University, Beijing, China
5. Fuzhou University Coll Chemistry Engineering, National Engineering Research Chemical Fertilizer Catalyst, Fujian, China
6. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing, China
7. Department of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa
8. Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Alberta, Canada