| 31. | In addition, frogmen have had to secure the harbor's spewing sewer pipes against any terrorists.
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| 32. | Most electronics cases are made of this form of polystyrene, as are many sewer pipes.
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| 33. | :A polypig is a solid plastic cylinder that is used to clear a sewer pipe.
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| 34. | They escape with a turn down a sewer pipe.
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| 35. | Miller's administration argues that the money is needed to fix aging water and sewer pipes.
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| 36. | The sewer pipe is supported by finished marble.
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| 37. | It started in 1993 when workers laying a sewer pipe uncovered a cache of chemical munitions.
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| 38. | Sewer pipes, some of which date from before World War I, leak water that ruins walls.
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| 39. | I take you to the sewer pipes ."
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| 40. | The cost of installing underground sewer pipes with a city already in place, would be high.
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