Ключевые слова: architect, build, builder, commercial, construction, construction worker, contractor, covering, dangerous, drill, drilling, electric, engineer, equipment, fitter, hard hat, harness, helmet, house, immigrant, industry, instrument, job, labor, layer, men at work, metal, occupation, profession, renovation, risk, roof, roofer, roofing, rooftop, routine, safe, scaffolding, structure, sunset, support, tiedup, tiling, uniform, working, working man,