Ключевые слова: big pile, brick, broken, building, built, cement, concrete, concrete factory, concrete slabs, construction, construction rubbish, contractor, development, engineering, equipment, factory, factory workshop, floor, gray, heavy, hollow core, house building, industrial, industrial area, manufacture, old, picking, precast, production, reinforced, reinforced concrete, renovation, rubbish, slab, stack, tech, up, used concrete slabs, wall, work,