Ключевые слова: architecture, background, blue, builder, building, business, cap, city, concrete, construction, contractor, danger, engineer, engineering, equipment, equipments, factory, floor, hard, hardhat, hat, hats, head, headgear, helmet, helmets, industrial, industry, inspection, job, life, maintenance, manufacturing, orange, plan, prevention, professional, project, protect, protection, safe, safety, security, site, tool, wear, work, worker, workman, yellow,