Ключевые слова: abstract, anthracite, background, black, blast furnace, carbon, charcoal, closeup, coal, coal mine, combustible, crisis, dark, dirty, energy, energy crisis, environment, fossil, fuel, furnace, geology, hard, heap, heat, hot, industrial, industry, material, mine, miner, mineral, mining, nature, nuclear winter, pattern, piece, pile, pollution, power, raw material, resource, rock, rough, shiny, stack, stocks, stone, structure, texture, textured,