| 11. | Inability to de-ballast the ship caused by formation of ice in the high-pressure air pipes then caused " Thresher " to sink.
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| 12. | It was fully heated with hot air pipes and every single desk was served by two electric fans and two electric lights.
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| 13. | But the air pipe managed to sustain them and the men began tracking the on-again, off-again noise of the rescue drilling above.
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| 14. | To couple the locomotive and coaches Scharfenberg couplers were fitted that at the same time served to couple the brake air pipes.
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| 15. | Hess revealed for the first time Sunday just how much luck and guesswork had gone into the placement of the air pipe.
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| 16. | Water taps are present at regular intervals, and plumbing, electrical conduits, and compressed air pipes are affixed to the underside of the wharf.
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| 17. | At the bottom, the group boards a miniature train for a half-mile ride through the dark as a giant air pipe roars overhead.
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| 18. | Then a communication device was lowered through a 6-inch air pipe and actual words of greeting and thanks were heard from survivors below.
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| 19. | The crew used special air pipes to pump hot air into Priroda to remove the extra moisture, said Mission Control spokeswoman Vera Medvedkova.
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| 20. | Butterfly valves or dampers were fitted to the top of each vertical air pipe, so that the amount of cooling could be regulated.
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