Ключевые слова: architect, architecture, background, builder, business, cement, civil, concrete, construction, contractor, development, employees, employment, engineer, engineering, equipment, floor, hand, hardhat, helmet, holding, home, house, industrial, industry, job, male, man, men, occupation, people, person, professional, progress, project, protection, protective, safety, safety first, screwdriver, site, tool, top, top view, under construction, work, worker, workers, workplace, yellow,