Affiliation: | 1.Department of Surface Mining, Mining Faculty, Hanoi University of Mining and Geology, 18 Vien St., Duc Thang Ward, Bac Tu Liem Dist., Hanoi, Vietnam ;2.Center for Mining, Electro-Mechanical Research, Hanoi University of Mining and Geology, 18 Vien St., Duc Thang Ward, Bac Tu Liem Dist., Hanoi, Vietnam ;3.Department of Energy Resources Engineering, Pukyong National University, Busan, 48513, Korea ;4.Center for Advanced Training of Mining Engineers, National University of Science and Technology MISiS, Moscow, Russia, 119049 ;5.Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam ;6.Faculty of Surveying and Mapping, Hanoi University of Mining and Geology, 18 Vien St., Duc Thang Ward, Bac Tu Liem Dist., Hanoi, Vietnam ;7.Faculty of Mining, Quang Ninh University of Industry, Yen Tho Ward, Dong Trieu Town, Quang Ninh, Vietnam ; |