coalfields Definition

coal, coal mine, colliery, coalmine, coalminer, coal miner, mines, steelworks, bauxite, miners, opencast mining, goldfield, appalachian mountains, anthracite coal, anthracite, steelmaking, steel mill, rust belt, pitmen, comstock lode, bituminous coal, pithead, steelworkers, hollows, cumberland plateau, rustbelt, colliers, coal seam, appalachians, allegheny mountains, tenement, ironworks, lignite, kaolin, slag heap, brickmaking, appalachia, blast furnace, textile mill, carboniferous period, commonwealth, coolgardie, dendron, opencut, carboniferous, smelting, quarries, broken hill, manganese, moorlands, shires, alleghenies, tablelands, pneumoconiosis, quarrymen, taconite, communities, hamlets, macdonnell ranges, west virginian, virginias, iron ore, kyanite, railways, wva, coalface, ironstone, workingmen, cumberland gap, heartland, moonshining, towns, saltpan, solway firth, brickyard, west virginia, megapolis, silesia, dragline, localities, piedmont, woodlands, culm, coalman, magnetite, shales, mountaintops, potteries, region, gasworks, lode, metallurgical, silicosis, midlands, nepheline, surface mine, kuznetsk, kilns, bottomland, brickfields,