Ключевые слова: accident, aid, architect, background, building, business, caution, concept, construction, danger, dangerous, engineer, engineering, equipment, factory, first, hand, hard hat, hat, health, helmet, industrial, industry, injury, inspection, inspector, law, maintenance, man, men at work, person, procedure, procedures, professional, protect, protection, protective, regulation, safe, safety, safety equipment, safety helmet, security, sign, symbol, tool, work, worker, workplace, yellow,