Ключевые слова: big, car, career, coal, construction, dig, digger, dump, dumper, earth, ecology, energy, environment, equipment, excavation, excavator, factory, fuel, geology, gold, heavy, huge, industrial, industry, iron, large, loader, machine, machinery, metal, mine, miner, mineral, mining, open, opencast, ore, pit, production, quarry, rock, stone, technology, transport, transportation, truck, vehicle, work,