Ключевые слова: apprentice, architect, architecture, building, business, cement, checking, civil, commercial, concrete, construction, contractor, control, corporate, crane, development, discussion, employee, engineer, engineering, equipment, examining, expressway, hard hat, helmet, highway, industrial, industry, inspection, job, labor, land, machinery, man, management, manager, outdoors, person, professional, project, road, safety, site, station, supervising, survey, surveyor, technology, work, worker,