11.   It also runs a nationwide service that keeps track of underground pipes, to prevent accidents during construction.

12.   That information is then sent to all companies with underground pipes in the state.

13.   Such systems use a water solution running through underground pipes to transfer heat from the warm earth or water underground into a home in the winter.

14.   The explosives this time were hidden in a truck or in an underground pipe outside the nine-story building.

15.   The water was drained into underground pipes.

16.   They said they suspect the system of underground pipes and reservoirs, which is being built largely with American equipment, has some clandestine military purpose.

17.   A quake of six can shook buildings violently, crack asphalt and burst underground pipes.

18.   A surprise discovery of underground pipes and concrete has halted efforts to shore up the leaning Tower of Pisa, the head of the international preservation team announced Friday.

19.   A quake of magnitude six can shake buildings violently, crack asphalt and burst underground pipes.

20.   A quake of magnitude six can shook buildings violently, crack asphalt and burst underground pipes.