Ключевые слова: accident, alert, attention, automated, beware, building, business, care, careful, caution, construction, danger, dangerous, engineer, engineering, error, exclamation, factory, first, hazard, health, hygiene, industry, job, machinery, maintenance, manager, manufacture, mistake, prevention, protection, risk, rules, safe, safety, secure, security, sign, signal, site, stop, symbol, teamwork, technician, warning, wearing, work, worker, workshop, zero,