1. College of Resources and Safety Engineering; China University of Mining and Technology; Beijing China
2. State Key Laboratory of Coal Resources and Safe Mining; China University of Mining and Technology; Beijing China
3. Energy and Mineral Engineering, G Center and EMS Energy Institute; Pennsylvania State University; University Park Pennsylvania USA
4. Neutron Scattering Laboratory; China Institute of Atomic Energy; Beijing China
5. School of Mechanical and Mining Engineering; University of Queensland; Brisbane Queensland Australia
6. Institute of Geophysics and Geomatics; China University of Geosciences; Wuhan China