Ключевые слова: aluminum, auto, bulldozer, car, coal, construction, diamond, dig, digger, digging, dirt, dump, dumper, dumptruck, earth, ecology, energy, equipment, excavator, heavy, huge, industrial, industry, iron, large, loader, machine, machinery, mine, mover, openpit, ore, pit, quarry, road, rock, sand, shovel, stone, tractor, transport, transportation, truck, uranium, vehicle, wheels, work, yellow,