Ключевые слова: anthracite, background, black, blurred, bright, carbon, charcoal, coal, combustible, combustion, composition, dark, dim, dirty, dirty gold, energy, exchange, exploitation, extraction, factory, fossil, fractured, fuel, gold, hard, heavy, industrial, industry, manufacturing, material, mine, mineral, mining, natural, obscure, old, organic, piece, pile, power, production, raw, resource, rock, set, shining, shiny, stone, swap, unclean,