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      Knowledge is Power

      Scientific American February 03, 1912

      The Estimation of Ore Reserves

      A Practical Method of Gaǵinǵ the Extent of a Deposit

      • By Frank H. Probert, Roy B. Earling on February 3, 1912

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      More in the February 03, 1912 issue of Scientific American
      • Modern Water Coolers for Factories
      • Salt Manufacture in Great Britain
      • The Water Tower
      View Full Contents
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