Ключевые слова: adult, adults only, business, businessman, candid, caucasian ethnicity, colleague, confidence, construction industry, construction worker, cooperation, coworker, efficiency, engineer, equipment, expertise, factory, foreman, full length, hardhat, indoors, industry, looking, looking at camera, machinery, males, manager, manufacturing, manufacturing equipment, mature adult, mature men, men, metal industry, mid adult, mid adult men, occupation, place of work, professional occupation, protective workwear, safety, skill, smiling, standing, teamwork, technology, two people, work helmet, work tool, working,