Ключевые слова: activity, aerial, big, building, bulldozer, cable, cargo, cement, concrete, construction, crane, design, dig, elevator, employees, engine, equipment, hawser, health, heavy, high, holding, hook, huge, industrial, industry, lapse, lift, load, machinery, manual, panel, plate, rails, rcs, road, rope, street, structure, telescopic, telescoping, time, timelapse, tracktor, tram, truck, wire, work, workers,