Ключевые слова: 50s, assembly, autonomous sewerage, builder, caucasian, concrete ring, construction, construction worker, crowbar, drainage, engineer, equipment, european, general worker, handling, handyman, installation, installer, installing, lever, lift, lifting, liquid waste, man, motion, moving, people, person, plumber, pushing, raise, relocation, rigger, rigging, roll, roller deck, roller flooring, rollers, rolling, septic tank, sewerage, sewerage system, shifting, slide, sliding, wastewater, wastewater treatment, white, worker,