Ключевые слова: belt, big, bulldozer, coal, construction, conveyor, dirt, dump, earth, ecology, environment, equipment, excavation, exploitation, extraction, factory, gravel, heap, heavy, industrial, land, landscape, large, loader, machine, machinery, material, metal, mineral, mining, open, opencast, ore, pile, pit, plant, power, production, quarry, recycling, rock, sky, soil, stone, technology, transportation, truck, vehicle, work, yellow,