Ключевые слова: activity, architecture, bitumen, bituminous, builder, building, building construction, coating, construction, construction site, construction worker, contractor, covering, equipment, felt, fire, flame, flat roofing, gas, gas burner, hard hat, helmet, hot, industrial, industrial worker, installation, maintenance, man, melting, professional, propane flame, propane torch, protection, repair, roof, roofer, roofing, roofing felt, rooftop, ruberoid, tar, torch, uniform, waterproof, waterproofing, work, worker, workman, workwear,