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      Scientific American March 27, 1909

      A New Process for Reducing Copper

      A Method Applicable to Ores of all Trades

      • By O. Froelich on March 27, 1909

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      More in the March 27, 1909 issue of Scientific American
      • An Automobile Tilting Dump Wagon
      • Joining Simplon with Loetschberg
      • The Manufacture of Smokeless Powder
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