Ключевые слова: abstract, background, bituminous, black, bonfire, burning, coal, cost, cube, dark, deposits, dirty, ecology, effect, energy, environment, exploitation, extract, extraction, fire, fossil, fuel, gas, heap, heat, hot, industrial, industrial coal, industry, lignite, manufacturing, material, metallurgical, mine, miner, mineral, nature, power, power station, resources, rock, smoke, stone, stove, texture, textured, tiled, worker,