Ключевые слова: activity, background, bucket, building, bulldozer, business, construction, dig, digger, economy, engineering, equipment, excavation, excavator, factory, gravel, heap, heavy, hydraulic, industrial, large, loader, machine, machinery, material, mineral, mining, mover, pit, plant, production, quarry, reservoir, sand, scoop, shovel, soil, sort, sorting, stack, steel, supply, technology, tractor, transportation, vehicle, view, water, work, yellow,