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      Knowledge is Power

      Scientific American November 10, 1888

      Mill for Concentrating Silver Ores, at Leadville, Colorado

      • November 10, 1888

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      More in the November 10, 1888 issue of Scientific American
      • The Petite Anse Salt Mine
      • Apparatus for Mining and Blasting under Water on the Panama Canal
      • Lebrun's Gas Burner
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