coalfield Definition

colliery, coal mine, coal, coalmine, coalminer, steelworks, anthracite, bituminous coal, goldfield, coal seam, lignite, slag heap, iron ore, mineworker, bauxite, shale, steelmaking, smelter, taconite, region, mine, opencast mining, coal miner, miners, steam coal, colliers, pitmen, sea coal, pithead, rustbelt, coolgardie, cannel coal, anthracite coal, moorlands, quarrying, opencut, cumberland plateau, strath, wva, uplands, pneumoconiosis, comstock lode, shires, montgomeryshire, strip mine, miner, brown coal, xylanthrax, surface mine, carboniferous, saltpan, appalachia, manganese, coalsack, valleys, quarrymen, molly maguire, mineral extraction, ironstone, silicosis, macdonnell ranges, hydropower, steelworkers, tablelands, mineshaft, subsidence, steel mill, tenement, methane, bisie, rust belt, spelter, anthracosis, inner mongolia, tien shan, blast furnace, fluorite, gasholder, nepheline, cuadrilla, coking, sepon, conurbation, tailings, cambrian mountains, railway, rhondda, rhodope mountains, gasfield, kuznetsk, kilns, ethnic minority, opencast, west virginia, appalachian mountains, ironworks, cwm, dendron, stone pit, fushun,