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      Knowledge is Power

      Scientific American October 28, 1911

      A Remarkable Bucket Chain Excavator

      Cement Digging by Machinery

      • October 28, 1911

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      More in the October 28, 1911 issue of Scientific American
      • Caisson Sickness and Compressed Air—II
      • Suǵǵestions for a Flyinǵ Machine
      • A Hiǵh Speed Cast Iron Flywheel
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