Ключевые слова: big, bucket, bulldozer, construction, dig, digger, earth, energy, environment, equipment, excavation, excavator, extracting, extraction, geology, heavy, hydraulic, industrial, industry, iron, large, loader, machine, machinery, metal, mine, mineral, ore, power, production, quarry, rock, shovel, site, soil, transport, transportation, truck, vehicle, work, works, yellow,