| 31. | Oil is sucked into a sump in lieu of air.
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| 32. | Sewage flows by means of gravity into each house s collection sump.
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| 33. | Often, heaters and thermostats are placed in the sump.
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| 34. | The liquid wastes were placed in a sump ( Sump 1 ).
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| 35. | The liquid wastes were placed in a sump ( Sump 1 ).
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| 36. | A final exploration in 2001 discovered the sump at-472 m.
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| 37. | The cave has been explored for to an impassable sump.
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| 38. | A sump can also improve aeration of the water in the aquarium.
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| 39. | Divers have explored beyond sump 1 through another seven sumps.
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| 40. | Divers have explored beyond sump 1 through another seven sumps.
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