Ключевые слова: accident, alarm, alert, background, brake, business, closeup, construction, control, controlling, emergency, equipment, exit, factory, handle, hazard, industrial, industry, inside, inspecting, interior, international, isolated, machine, machinery, metal, mine site, miner, occupation, open, person, plane, production, professional, protection, pull, safety, safety device, security, sign, sitting, standard, stop, structure, switch, switch off, technology, tool, transportation, turn,