Ключевые слова: background, backhoe loader, build, business, cement, concrete, construction, development, dig, dirty, ditch, drain, drainage, equipment, excavator, foundation, gravel, ground, heavy, hole, industrial, industry, installing, large, manufacturing, outdoors, pipe, pipe concept, repair, road, sanitary, sewage, sewer, site, soil, street, substation, system, treatment, trench, tube, underground, vehicle, wall, waste, water, water ways, work, worker,