Ключевые слова: adult, apprentice, business, construction, contractor, control, employee, engineering, equipment, facility, factory, foreman, happy, heavy, helmet, horizontal, industry, labor, machinery, maintenance, male, man, manager, manufacture, manufacturing, mechanic, metal, occupation, operator, person, plant, production, professional, protection, safety, service, skill, steel, technician, technology, uniform, warehouse, work, workplace, workshop, young,