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      Knowledge is Power

      Scientific American October 19, 1907

      The Mining of Monazite

      A Thorium-Yielding Mineral

      • By Douglas B. Sterrett on October 19, 1907

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      More in the October 19, 1907 issue of Scientific American
      • A Home-Made Slide-Wire Electrical Bridge
      • Original Research
      • The Development of Armored War Vessels.—VIII
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