Ключевые слова: civil engineering, construction, construction equipment, construction site, digging, dirt, dirt construction, dirt work, engineering, excavation, heavy machinery, infrastructure, line, maintenance, metal, metal pipe, metal pipeline, old, old water line, pipe, pipeline, pipeline construction, pipeline maintenance, piping, repair, replacement, trench, trench construction, trenching, underground, underground infrastructure, underground utilities, underground water, utility, utility construction, water, water line, water system,