Ключевые слова: abstract, ash, background, black, burning, business, charcoal, closeup, clover, coal, cost, dark, dirty, ecology, effect, energy, environment, exploitation, flame, flip, fossil, fuel, gas, green energy, heat, hot, industrial, industrial coal, industry, macro, manufacturing, material, mine, miner, mineral, natural, natural wealth, nature, pile, power, power engineering, power station, resources, smoke, stone, strategic resource, texture, textured, tiled, types,