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      Knowledge is Power

      Scientific American June 1922

      Building a Road with a Dredge

      Sand, Pumped from the Mississippi River, Carries the Highway Across a Wisconsin Lake

      • By L. J. Jellison on June 1, 1922

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      More in the June 1922 issue of Scientific American
      • Speeding up Radio
      • The Gentle Art of Radio Broadcasting
      • The Problem of Mooring Airships
      View Full Contents
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