Ключевые слова: accident, adult, background, blue, builder, building, busy, concrete, construction, day, development, equipment, floor, formwork, frame, group, hat, health, helmet, high, house, industrial, industry, infrastructure, installation, light, male, manual, men, occupation, oil, people, profession, project, protection, risk, safety, scaffold, scaffolding, silhouette, site, sky, steel, steel construction, tank, tool, white, work, worker, young,