矿山水害治理
mine water disaster governing
治山治水
afforestation and water conservancy
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
哀牢山矿集区
Ailaoshan ore concentration region
安徽琅琊山矿业总公司
anhui langyashan general mining company
白石砬子白钨矿矿床
Baishilazi scheelite deposit