Ключевые слова: 3039 years, african american, architect, construction, coworker, development, drill, employee, engineering, equipment, facility, factory, glove, goggles, hard hat, heavy, heavy duty, helmet, individuality, industry, jacket, job, large, machinery, machinist, man, manufacturing, metal, metallurgy, metalwork, occupation, operating, person, plant, professional, protection, repairing, safety, screen, service, steel, technician, technology, trainee, uniform, warehouse, white collar worker, worker, workshop,