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      Scientific American March 07, 1908

      Caisson Foundations of Skyscrapers

      Sand Hogs and the Work they do

      • By T. Kennard Thomson on March 7, 1908

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      More in the March 07, 1908 issue of Scientific American
      • Engineering Notes
      • Pneumatic Tools in Iron Foundries
      • Trade Notes and Formulæ
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