Ключевые слова: anthracite, background, bituminous, black, burning, business, central, clean, coal, cube, dark, deposits, ecology, effect, energy, environment, exploitation, extract, extraction, fuel, gas, heat, helmet, hot, industry, lignite, load, manufacturing, material, metallurgical, mine, miner, mineral, nature, of, pile, power, production, resources, smoke, station, stone, texture, things, tools, types, uses, winter, wood, work,