Ключевые слова: activity, architect, architecture, background, builder, building, built, business, city, concrete, construction, contractor, design, development, engineer, engineering, equipment, ground, helmet, high, industrial, industry, infrastructure, job, land, machine, machinery, manual, modern, new, occupation, people, plan, professional, project, residential, safety, site, skull, steel, structure, team, teamwork, technology, tool, tower, urban, work, worker, workplace,