Ключевые слова: building, city, construction, daytime, dirt, dust, earth, engineering, environment, equipment, evening, gear, hard, has, heavy, helmet, industrial, infrastructure, laboratory, light, loader, loading, machinery, machines, management, manual, mechanics, moving, operator, outdoors, productivity, profession, project, safety, site, sites, skills, sun, sunset, task, teamwork, terrain, transportation, urban, vehicle, work, workday, worker, workers, zone,