Ключевые слова: activity, backhoe, big, bulldozer, construction, crushed stone, development, dig, dirty, drive, driving, dump, dust, engineering, equipment, excavation, excavator, gravel, heavy, industrial, industry, large, loader, loading, machine, machinery, metal, mine, mineral, mining, opencast, ore, power, production, quarry, road, roadwork, rock, rocks, shoveling, site, sky, stone, technology, tractor, transport, transportation, vehicle, wheel, work,