Ключевые слова: adult, architect, building, building contractor, business, caucasian ethnicity, construction industry, construction site, construction worker, cooperation, development, engineer, expertise, foreman, group of people, happiness, hardhat, helmet, holding, industry, looking at camera, males, manager, mature adult, men, mid adult, mid adult men, multiethnic group, occupation, outdoors, professional occupation, protective workwear, reflective clothing, safety, selective focus, showing, sign, teamwork, uniform, women, work helmet,