Ключевые слова: activity, adult, architect, architecture, blueprint, building, building contractor, built structure, business, businessman, candid, caucasian ethnicity, construction frame, construction industry, construction site, construction worker, cooperation, development, discussion, engineer, engineering, equipment, expertise, foreman, full length, hardhat, helmet, industry, looking, machinery, males, manager, mature adult, men, mid adult, occupation, outdoors, plan, planning, professional occupation, protective workwear, reflective clothing, safety, standing, success, teamwork, two people, work helmet, working,