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      Knowledge is Power

      Scientific American May 30, 1914

      An Unattended Lighthouse, The Boiler Plant of the "Britannic", and more

      • By H. J. Shepstone on May 30, 1914

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      More in the May 30, 1914 issue of Scientific American
      • Correspondence- May 30, 1914
      • The Iron Smelter's Fuel Bill
      • Iron Ore, Pig-iron, and Steel Production
      View Full Contents
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