Report discussing the geology of the Quartz Creek pegmatite district of Gunnison County, Colorado. "The Quartz Creek pegmatite district includes an area of about 29 square miles in the vicinity of Quartz Creek in Gunnison County, Colorado. This area contains 1,803 pegmatites that are intruded into pre-Cambrian rocks."

A report regarding the geology of the Quartz creek Pegmatite District, in Gunnison County, Colordao

From introduction: The study of the Crystal Mountain district, Larimer County, Colo., is but one phase of this post-World War II pegmatite program, in part carried out by the Geological Survey on behalf of the Division of Raw Materials of the Atomic Energy Commission.

Report discussing the geology of the pegmatites in the Crystal Mountain district in Larimer County, Colorado.

From abstract: A reconnaissance to determine the uranium content of granitic rocks in the western states was made during parts of October and November 1951. The paucity of our knowledge of the granitic rocks that are most likely to contain significant quantities of uranium has prevented all but a very general isolation of areas or types of granitic rocks for reconnaissance examination.

From abstract: The objectives in the investigation of airborne radioactivity surveying during fiscal year 1951 were: 1) Establishment of a routine technique of airborne radioactivity surveying -- completed by incorporating those phases of the aeromagnetic surveying technique that were applicable; 2) Development of automatic correction of the radiation measurement for variation in distance from source -- achieved by using the radar altimeter output to modify the output of the counting-rate meter in accordance with the observed variation of radiation intensity with distance from a source; 3) Development of more efficient radiation detectors -- including large scintillation detectors.

Report discussing geological investigations in 1947 of the Lower Yukon-Kuskokwin region in Alaska to determine whether radioactive materials existed in the area.

A report regarding radioactivity investigations performed in the vicinity of the Flat, Lower Yukon-Kuskokwim region in Alaska,

Report discussing the analysis of metalliferous deposits from the Iliamna Lake-Lake Clark region. These deposits contained quantities of silver and hematite, which showed the possible presence of uranium as well.

A report regarding a field investigation done in 1949, made in order to search for radioactive deposits in the Iliamna Lake-Lake Clark Region, in Southwestern Alaska.

From Foreword: "This manual was written to serve as a guide for analysts interested in the determination of small amounts of uranium. All of the methods presented here have been developed in the U.S. Geological Survey and are based on the measurement of the fluorescence of uranium in fluoride melts."

From introduction: The Martha E prospect, in Spring Gulch about three and one-half miles southwest of Idaho Springs, Colo. (fig. 1), is on a claim, originally called the Daisy Freese, which was first prospected by the Stanley Mines. The occurrence of radioactive minerals in the adit was called to the attention of the U. S. Geological Survey in 1950 by the owners of the claim. The Survey's Trace Elements Section Washington Laboratory identified metatorbernite, autunite, and sooty pitchblende.