Physical Exploration and Geologic Studies in the Colorado Plateau Uranium Region Recommendation c. 1950
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SUMMARY : Estimated reserves of carnotite ore in known deposits, and with an average grade of the ore that has been mined for vanadium in the past ten years, range from 219,000 tons to 1,094,641 tons, adequate to sustain capacity operation of the present mills from one to five years. Physical exploration would be necessary to insure additional reserves. Exploratory drilling is recommended.