Ключевые слова: adult, architect, architecture, building, building contractor, caucasian ethnicity, construction industry, construction machinery, construction site, construction worker, cooperation, development, digging, dirt, engineer, environment, equipment, factory, foreman, full length, hardhat, helmet, industry, looking, machinery, males, manager, men, mining, nature, occupation, outdoors, planning, pointing, professional occupation, protective workwear, reflective clothing, reflector, safety, showing, smiling, standing, success, teamwork, two people, work helmet, working,