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      Scientific American September 11, 1915

      Electrostatic Ore Separation

      Principles of a New Method of Metallurgical Treatment

      • By I. C. Clark on September 11, 1915

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      More in the September 11, 1915 issue of Scientific American
      • Artificial Light Treatment of Surgical Tuberculosis
      • Great Inventions and the Public
      • Stadium at Athens
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