From abstract: A reconnaissance radiometric survey of parts of the northwestern San Juan Mountains has revealed the occurrence of uranium-bearing ores in several mining districts in Ouray and San Juan Counties, and the occurrence of thorium-bearing veins in southwestern Gunnison County.

From abstract: Pitchblende is known to occur in the Jo Reynolds deposit, which was primarily a lead-zinc-silver ore body. The reported production in 1919 of 8 tons of high-grade uranium ore, presumably from the lowest workings of the mine, is still unconfirmed but has a fair degree of credibility.

From introduction: This report presents, in tabular form, the results of radiometric and geologic reconnaissance made in the Craven and Coal Canyon areas during the period November 27 to December 7, 1951, in accordance with plans outlined in Trace Elements Memorandum Report 152, "The carnotite prospects of the Craven Canyon area, Fall River County, South Dakota." Assay data from the claims examined by L. R. Page and J. A. Redden are not included in this report. This work was done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

From transmittal letter: This report contains the results of radiometric examinations of 39 mines and prospects, and a detailed description of the properties examined.

Report discussing a method for the volumetric estimation of the oil yield of oil-bearing shale. The method can be applied to both shale and phosphatic shale.

A report about spectrographic determination of lead in zircon and in some other minerals has been made by the U. S. Geological Survey to provide data in a study of the age of the rocks that contained these particular minerals. Overall, standard spectrographic procedures were applied, including the split-filter method for calibrating the photographic emulsion.

A report which investigates three different rock samples that have been contaminated through pulverization in heavy machinery.

Report discussing the descriptive geology of three new formations of metamorphic rocks and details of about 420 pegmatites in the Fourmile area of Custer County, South Dakota.

Report discussing a radiometric examination that took place in 1950 to determine the grade, reserves, and mode of occurrence of uranium and thorium in east-central Idaho and south-western Montana.

Report discussing the U.S. Geological Survey's investigation of radioactive mineral deposits found in the Buckland-Kiwalik district on the Seward Peninsula of Alaska. Uranothorianite, as well as other radioactive minerals, were discovered in the area.

A report regarding geology of the area adjacent to the free enterprise uranium-silver mine in the Boulder District, Jefferson County, Montana.

An interim report regarding exploration on Club Mesa, Montrose County, Colorado. Done oin behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

A report regarding preliminary summary review of thorium-bearing mineral occurrences in Alaska. Concerns work done on behalf of the division of Raw Materials of the U.S. Atomic Energy Commission.

A report regarding a reconnaissance done in order to locate radioactive deposits in the Buckland-Kiwalik district, in the Candle Quadrangle in the Seward Peninsula, Alaska.

A preliminary reserve statement regarding Reserve Block 8 of Club Mesa, located in Montrose County, Colorado