1.   The investigators found that the underground pipes were badly corroded.

2.   The first phase brought drinking water to the Benghazi and Sirte areas, through a network of underground pipes and reservoirs built by South Korean companies.

3.   They capture the heat produced in electricity generation and distribute it through underground pipes.

4.   Also check with utility companies to find the location of all underground pipes and cables.

5.   Authorities believe the explosives may have been hidden in a truck or in underground pipes.

6.   All structures are heated by hot water distributed by underground pipes from a large furnace fueled by waste sawdust produced in nearby mills.

7.   But when officials tried to restore water on Independence Day, the underground pipes were so corroded that most people ended up without even a drop.

8.   For some reason, when people then thought long-term, they saw everything from business correspondence to ready-cooked meals whizzing across town through underground pipes.

9.   His tasks include repairing bathroom fixtures, underground pipes, irrigation equipment and other plumbing gear.