235 resultados para Uranium ores


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"TID UC-51."

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"United States Atomic Energy Commission Contract No. AT (49-6)-916."

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"United States Atomic Energy Commission Contract No. AT (49-6)-916."

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"United States Atomic Energy Commission Contract No. AT (49-6)-916."

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"United States Atomic Energy Commission Contract No. AT (49-6)-916."

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"This report concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission."

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Work performed by the Columbia University Mineral Beneficiation Laboratory under Contract AT(49-1)-621.

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A reconnaissance for uranium was conducted in the Black Mountain-Yale Point area of Black Mesa, Arizona, from February to November 1954. Numerous uranium deposits were examined, which appear to be situated in areas of greater tectonic deformation and confined to a single stratigraphic zone in the Toreva formation of the Upper Cretaceous Mesaverde group. Locally the uranium appears to occur in the vicinity of carbonized plant material in quartzose sand lenses, within paleostream channel deposits.

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"TID UC-51."

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At head of title: Imperial Mineral Resources Bureau.

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At head of title: Imperial Mineral Resources Bureau.

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Includes bibliography.