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      Knowledge is Power

      Scientific American June 11, 1921

      Sixty Tons Per Minute

      Baltimore's New Coal Pier, and How It Makes Its Records

      • By J. F. Springer on June 11, 1921

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      More in the June 11, 1921 issue of Scientific American
      • An Alternative to Einstein
      • The Yangtse Shallow-Draft Steamer Anning, Aerial Radio Protection and more
      • Counting Electrons
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