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
白秧坪—华昌山矿带
Baiyangping-Huachangshan ore belt
北京首钢铁矿山
beijing shougang iron mine
采金船矿山
mine field of dredge work
长白山矿泉水
Natural spring water of Changbaishan area
长沙矿山研究院岩力所
Changxha Institute of Mining Research
储量危急矿山
Mines with critical resources reserves
大宝山铁铜多金属矿山
Dabaoshan polymetallic deposit