Ключевые слова: adult, american, assembly, business, colleague, complexity, concentration, contractor, control, efficiency, effort, engineer, engineering, equipment, examining, facility, factory, foreman, hard hat, helmet, indoor, industrial, industry, job, machine, machinery, male, man, manager, manufacturing, metal, occupation, operator, person, production, professional, protective, safety, skill, steel, teamwork, technician, technology, two, warehouse, work, worker, workers, working, workman,