Ключевые слова: activity, boom, bucket, build, building, bulldozer, concrete, construction, contractors, demolition, dig, digger, digging, dirt, earth, engineering, equipment, excavate, excavating, excavation, excavator, ground, heavy, industrial, industry, loader, machine, machinery, mine, mining, mover, power, quarry, sand, scoop, shovel, site, sky, soil, tractor, vehicle, work, working, works, yellow,