Ключевые слова: anthracite, ash, background, black, burning, carbon, charcoal, closeup, coal, copy, dark, deposits, dirty, energy, environment, extract, extraction, fuel, geology, hands, heap, heat, holding, industry, lignite, male, man, manufacturing, many, material, mine, miner, mineral, mining, natural, nature, person, pile, power, production, raw, resource, rock, space, stone, text, top, view, wealth, work,