Ключевые слова: adult, business, caucasian, computer, construction, engineer, engineering, equipment, face, factory, hardhat, hat, heavy, helmet, industrial, industry, job, machine, machinery, male, man, manager, manufacture, manufacturing, metal, occupation, operator, people, person, plant, portrait, production, profession, professional, protective, repair, repairman, safety, steel, technician, technology, tool, training, uniform, work, worker, workman, workplace, workshop, young,