Ключевые слова: accident, architect, architecture, background, blue, builder, building, business, cement, concrete, construction, contractor, danger, engineer, engineering, equipment, factory, floor, hard, hardhat, hat, head, health, healthy, helmet, industrial, industry, job, maintenance, orange, personal, plastic, professional, project, protect, protection, protective, safe, safety, security, site, tool, wear, white, work, worker, workman, yellow,