Ключевые слова: antiknock helmet, architecture, artisan, belt, build, build a house, climb, construct a house, construction, craftsman, danger, dangerous, dangerous workers, driller, electrician, engineer, hardhat, hazardous, high, high place, industrial, iron, jeopardy, job, labor, laborer, man, mechanic, reamer, risk, roofing, roofing construction, safety, sky, smith, steel, steel frame, steel roof truss, structure, technician, technology, venture, wire, worker, workman,