State Key Laboratory of Coal Resources and Mine Safety, China University of Mining (ε) Technology, Xuzhou 221008, China;
School of Mines, China University of Mining (ε) Technology, Xuzhou 22116, China;
State Key Laboratory of Coal Resources and Mine Safety, China University of Mining (ε) Technology, Xuzhou 221008, China;
School of Mines, China University of Mining (ε) Technology, Xuzhou 22116, China;
Panzhihua Coal Limited Liability Company, Panzhihua 617066, China;
Panzhihua Coal Limited Liability Company, Panzhihua 617066, China;