Ключевые слова: abstract, anthracite, anthracitic, backdrop, background, bituminous, black, brick, carbonic, coal, coalbed, coalface, coalfield, coalseam, coaly, colliery, combustible, fossil, fuel, hard, industrial, industry, lump, material, mine, minerals, mining, natural, nature, pit, relief, resources, rock, rough, seam, stone, structure, substance, surface, texture, wallpaper, wood,