Mining College of Guizhou University, Guiyang, Guizhou, PRC. 550003;/Key Laboratory of Comprehensive Utilization of Nonmetal Mineral Resources, Guiyang, Guizhou, PRC. 550003
Mining College of Guizhou University, Guiyang, Guizhou, PRC. 550003;/Key Laboratory of Comprehensive Utilization of Nonmetal Mineral Resources, Guiyang, Guizhou, PRC. 550003
Mining College of Guizhou University, Guiyang, Guizhou, PRC. 550003;/Key Laboratory of Comprehensive Utilization of Nonmetal Mineral Resources, Guiyang, Guizhou, PRC. 550003
Mining College of Guizhou University, Guiyang, Guizhou, PRC. 550003;/Key Laboratory of Comprehensive Utilization of Nonmetal Mineral Resources, Guiyang, Guizhou, PRC. 550003
Mining College of Guizhou University, Guiyang, Guizhou, PRC. 550003;/Key Laboratory of Comprehensive Utilization of Nonmetal Mineral Resources, Guiyang, Guizhou, PRC. 550003
Mining College of Guizhou University, Guiyang, Guizhou, PRC. 550003;/Key Laboratory of Comprehensive Utilization of Nonmetal Mineral Resources, Guiyang, Guizhou, PRC. 550003
Energy Agency of Liupanshui, Guizhou Province, Liupanshui, Guizhou, PRC. 553000;
Coal Board of Shuicheng, Guizhou Province, Shuicheng, Guizhou, PRC. 553000;
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