Ключевые слова: accident, aid, background, care, careful, caution, concept, construction, danger, dangerous, emergency, employee, engineer, engineering, environmental, equipment, factory, first, health, helmet, industrial, industry, injury, insurance, job, life, machinery, man, men at work, office, people, personal, place, prevention, procedure, protection, regulation, risk, rule, safe, safety, security, shock, signs, solution, wear, work, workplace, yellow,