Ключевые слова: cable, check, climbing, connection, construction, crane, danger, dangerous, electric, electrical, electrician, electricity, energetic, energy, engineering, environment, equipment, high, industrial, industry, install, installation, line, lineman, lines, maintenance, man, metal, occupation, plant, post, power, powerful, professional, protection, repair, safety, service, sky, system, technician, technology, tool, volt, voltage, wire, wiring, work, worker,