Affiliation: | 1.Faculty of Mining and Geology, Institute of Geological Engineering, VŠB-Technical University of Ostrava, 17 listopadu 15, 708 33, Ostrava, Czech Republic ;2.Faculty of Engineering, Department of Geological Engineering, Cumhuriyet University, 58140, Sivas, Turkey ;3.Yunnan Land and Resources Vocational College, 652501, Kunming, Yunnan, People’s Republic of China ; |