Ключевые слова: adult, architect, background, builder, building, business, colleague, communication, construction, contractor, conversation, development, engineer, equipment, foreman, helmet, holding, industrial, job, machine, machinery, male, manager, men, occupation, orange, outdoors, person, power, production, profession, professional, project, protective, safety, site, sky, standing, sunrise, sunset, supervisor, team, teamwork, technology, transportation, two, visibility, worker, working, workplace,