Ключевые слова: abstract, anthracite, ash, asphalt, background, bitumen, black, black coal, black diamond coal, burning, carbon, charcoal, clean, coal, coalification, coke, coked, dark, deposit, dirty, dust, energy, environment, extract, extraction, flame, fossil, fuel, gas, hard coal, heat, industrial, industry, macro, manufacturing, material, metallurgical, mine, miner, mineral, ore, pollution, power, raw, resources, rock, stone, surface, texture, worker,