Ключевые слова: architect, background, blue, build, builder, building, business, civil, color, concept, construction, contractor, dirty, engineer, engineering, equipment, factory, foreman, hanging, hard, hard hat, hardhat, hat, head, health, healthy, helmet, industry, interior, job, labor, maintenance, many, object, plastic, project, protect, row, safe, safety, site, tools, wear, white, work, worker, workman, workplace, yellow,