Ключевые слова: adult, camera, caucasian, confidence, construction, engineer, engineering, equipment, expertise, factory, glasses, hard, hardhat, hat, indoors, industry, leaning, looking, machine, machinery, males, man, manager, manufacturing, mechanic, men, metal, occupation, one, part, people, person, portrait, professional, protective, real, safety, skill, smiling, standing, steel, technology, tool, work, worker, working, workshop, workwear,