黄岗锡铁矿区
Huanggang Sn-Fe mining area
矿区铁路
coal area railway
coal mining area railway
Rail way in mining districts
mine railway
矿区铁路支线
branch lines of mining area
攀枝花钒钛磁铁矿矿区
panzhihua v-ti magnetite mine
汉阴县铁佛—汉滨区流芳金矿
the Liufang gold deposit in the Tiefo-Hanbin district of Hanyin county
铁矿采空区
exhausted area of iron mine
Mined-out Region
铁炉湾－吕阳斗成矿区
Ore-forming district of Tieluwan to Lvyangdou