Ключевые слова: architect, backgrounds, builder, business, challenge, civil, color image, construction site, construction worker, contractor, damaged, danger, development, employee, employment, engineer, engineering, equipment, expertise, factory, foreman, hard hat, hardhat, hat, head, helmet, horizontal, industry, job, lifestyles, maintenance, manufacturing, no people, occupation, paperwork, personnel, place, prevention, professional, protection, recruitment, risk, safe, safety, security, site, working, workwear,