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      Scientific American May 10, 1913

      Grinding Wheel Sparks

      How They Indicate the Character of Steel

      • By R. G. Williams on May 10, 1913

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      More in the May 10, 1913 issue of Scientific American
      • The Cost of Success
      • Measuring the Height of an Aeroplane
      • The Rainfall and Flood Conditions in Ohio, March 23 to 28, 1913
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