Ключевые слова: abstract, anthracite, background, black, bulk, business, carbon, cargo, coal, commercial, conveyor, dark, dirty, dust, dusty, energy, environment, field, frame, fuel, heap, heat, industrial, industry, lump, macro, material, mine, mineral, pattern, pieces, pile, pit, pollution, power, raw, reserve, resource, rock, shiny, shipping, stack, stone, summer, supply, texture, textured, tree, winter,