Ключевые слова: accident, backfilled, broken, busted, city, construction, ditch, emergency, emergency repair, engineering, equipment, flowing, frost, frozen, frozen pipes, heating main, heavy, hot, ice, industrial, industry, infrastructure, leak, leaking, line, maintenance, metal, old, pipe, pipeline, pipes, piping, pit, plumbing, power, pressure, repair, repairing, season, snow, street, system, technology, transit, trench, tube, urban, water, water supply, winter,