| 11. | "The Mooche " and " Harlem Air Shaft ."
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| 12. | Ice accumulation in the air shaft restricted ventilation which caused a buildup of methane gas.
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| 13. | Air shaft seems likely . talk ) 12 : 52, 4 October 2010 ( UTC)
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| 14. | There were also 6 air shafts in the cellar.
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| 15. | High over an air shaft, a caged canary sang.
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| 16. | He said he already puts up with noise from an air shaft two miles away.
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| 17. | Some of New York's slums were cleared and new tenements with air shafts were built.
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| 18. | Horrified, Luke falls through an air shaft and escapes.
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| 19. | Donovan and Martin hide in the mother-ship's air shafts.
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| 20. | The subterranean caverns were adequately ventilated by air shafts.
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