Ключевые слова: aggregate, black, bulk, carbon, chunks, closeup, coal, combustible, commodity, darkness, dense, economic, economics, energy, environmental, extraction, finish, fossil, fuel, fuels, generation, geology, gritty, heating, heavy, impact, industrial, industry, material, matte, mineral, minerals, mining, natural, nonrenewable, pile, power, production, raw, resource, resourceful, resources, rough, sector, solid, stockpile, sustainability, texture, thermal, trade, traditional, wealth,