矿山地质灾害
the mine geological disasters
mine geological disaster
mine geological hazards
geology hazards of mine
mining geological hazard
mine geologic hazard
mine geologic disaster
煤矿灾害防治
prevention and control of mine disaster
冶金部马鞍山矿山研究院；南京大学
MaanShan Institute of Mining Research
冶金部马鞍山矿山研究院环保研究所
Maanshan Environmental Protec-tion Research Institute