Ключевые слова: architect, architecture, background, builder, building, business, city, concept, construction, contractor, engineer, engineering, equipment, factory, hand, hard, hardhat, hat, helmet, industrial, industry, jeans, job, labor, maintenance, male, man, manufacturing, occupation, people, person, plant, production, professional, project, protect, protection, protective, safe, safety, security, site, standing, technician, technology, work, worker, workers, yellow,