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      Knowledge is Power

      Scientific American July 29, 1916

      The Process of Case Hardening

      A Method of Heat Treatment, of Great Importance in the Mechanical Art

      • By R. A. Millholland on July 29, 1916

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      More in the July 29, 1916 issue of Scientific American
      • Feeding the Firing Line
      • Shooting Soot from Chimneys
      • Water Pressure
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