Ключевые слова: background, backhoe, building, bulldozer, cement, concrete, connect, construction, contractor, development, digger, digging, drain, drainage, earth, engineering, equipment, excavation, excavator, foreman, ground, group, heavy, hydraulic, industrial, industry, labor, land, loader, machine, machinery, pipe, plumbing, road, safety, sand, scoop, shovel, shoveling, site, system, team, tractor, trench, uniform, vehicle, water, work, worker,