Ключевые слова: big, bucket, bulldozer, clay, construction, dig, digger, dump, earth, environment, equipment, excavation, excavator, geology, gravel, heavy, hydraulic, industrial, industry, iron, large, limestone, loader, machine, machinery, metal, mine, mining, mover, open, opencast, ore, pit, power, quarry, quarrying, road, rock, sand, shovel, site, sky, soil, stone, transportation, truck, vehicle, wheel, work, yellow,