Ключевые слова: abstract, anthracite, background, black, bulk, business, carbon, cargo, china, coal, commercial, conveyor, dark, dirt, dirty, dust, dusty, energy, environment, field, fossil, fuel, global, heap, industrial, industry, lump, material, mine, mineral, ore, pieces, pile, pit, pollution, power, raw, reserve, resource, rock, shiny, shipping, stone, storage, store, supply, texture, textured, winter, yard,