Ключевые слова: architect, architecture, blueprint, building, building contractor, building exterior, business, communication, construction, construction industry, construction site, construction worker, contractor, danger, digital tablet, engineer, engineering, fore person, foreman, hardhat, head wear, helmet, industry, males, manager, manual worker, manufacturing, mobile, mobile phone, occupational safety and health, outdoors, people, person, phone, plant, safety, security, service, silhouette, sky, smart phone, steel, sun, sunrise, sunset, supervisor, talking, technician, technology,