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