Tower crane lifting concrete frame

Keywords:

construction, crane, tall, building, skyscraper, machines, sky, towers, high, picking, industry, hoisting, up, blue, steel, business, activity, equipment, structure, cable, build, pulley, hoist, city, moving, machinery, architecture, work, site, built, hook, heavy, orange, materials, elevator, erect, platform, part, metal, urban, development, industrial, growth, block, lift, lifting, concrete, house, erector, raise,