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The Growth of the American Iron and Steel Industry
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amount beneficiation blast furnace cent coal costs Cuyuna demand for iron demand for steel depletion deposits Duluth E. W. Davis economic estimates exploited factor foreign freight future gross tons Henry H high-grade Ibid important industry of Minnesota Iron Age iron and steel iron content iron formation iron mining industry iron ore industry iron ore production iron ranges J. G. White Engineering labor Labrador Lake Erie price Lake Superior Lakes region Lippert Mesabi Range Mesabi taconites miles million dollars million tons Minnesota iron National Oliver Iron Mining open-pit mines operations pig iron Pittsburgh plant possible present probably problems properties rail railroad Republic Steel Corporation reserves royalty scrap shipments shipped sources steel centers steel companies Steel Corporation steel industry steel production supply taconite concentrate tion tonnage transportation U. S. Steel underground mines United Venezuelan Vermilion Vermilion Range Wade White Engineering Corporation Yaworski