This report presents results of a geological study of the Little Cone quadrangle in southwestern Colorado, as well as information on the mineralogy of the location.

Report discussing the U.S. Geological Survey's investigation of the Calamity group area and the carnotite deposits which are found in this area, often in sandstone.

A report regarding Caronotite Resources of the Calamity Group Area, In Mesa County, Colorado.

Report discussing the use of chemical concentrations of certain elements in uranium deposits of the Colorado Plateau as a guide for the size of the deposits.

Report discussing development drilling on the contact no. 4 claim, Gypsum Vall District, San Miguel County, Colorado

The following report covers detailed investigations on botanical methods of prospecting for uranium that have been developed on the Colorado Plateau by the U.S. Geological Survey.

This report presents a "digital model used to simulate ground-water flow in the aquifer system in a basin drained by Piceance and Yellow Creeks, Colorado." It includes maps, diagrams, and tables.

From abstract: Uranium deposits and radioactivity anomalies have been found in the eastern half of the area underlain by the Browns Park formation in northwestern Colorado, south-central Wyoming, and northeastern Utah. The deposits are in eolian, lacustrine, and fluvial sandstones, tuffaceous sandstones, and limestones all of which were deposited on two converging pediments during Miocene time. At least one eastern and one western facies of lacustrine and fluvial sedimentary rocks are separated by a belt of eolian sandstones. The faces may be distinguished in the field and by petrographic and heavy-mineral studies in the laboratory.

A report regarding the geology of the Copper King Uranium Mine, in Larimer County, Colorado.

This report describes preliminary investigations of the geology and uranium-vandium deposits of monogram mesa and adjacent areas in Paradox Valley and Bull Canyon

A report describing the discovery of a new vanadium mineral found at several mines in Colorado and Utah, including a description of its physical and chemical properties, prevalence, and other relevant data.

Report discussing a study revolving around montroseite and paramontroseite. This report is divided into several sections: source of the data, determination of the crystal structure of paramontroseite, refinement of the montroseite and paramontroseite structures by the method of least squares, structural features of the two, solid state alteration of montroseite, and other examples of solid state alteration phenomena.

Report containing geologic and vein maps for part of the Central City District, Colorado. Tables containing Shafts and adits in the area are included.

From abstract and summary: Long Park and vicinity is in T. 47 N., R. 17 W., Montrose County, Colo. The U. S. Geological Survey started a program of drilling in the area in April 1949, to find deposits that might be developed into new mines and to appraise the reserves of the area. This drilling was done during two periods of time under separate contracts.

A preliminary report regarding exploration in the Atkinson Mesa Area, Montrose County, Colorado

A report discussing an exploration of the san Miguel Bench

Preliminary report discussing Reserve Block J, Long Park Area

"The purpose of the reconnaissance was to determine the distribution and the economic importance of the radioactive occurrences of the region. The methods, as well as the results, of the investigation, are given in this report."

The following report covers a reconnaissance for uranium-bearing carbonaceous rocks that was made during the 1952 field season in 23 areas in Colorado, Utah, Idaho, and Wyoming. This report discusses uranium samples discovered withing these locations, however it was determined that none of the deposits discovered have commercial possibilities.

Report discussing a reconnaissance for uranium-bearing carbonaceous rocks during the 1952 field season in 23 areas in Colorado, Utah, Idaho, and Wyoming. From Abstract: "Uranium in small amounts occurs in several of the areas examined, but no deposits were found that might have commercial possibilities."

Report discussing an investigation of copper deposits in sandstone that were believed to be possibly uraniferous, and uraniferous asphaltite deposits.

From abstract: "Stratigraphic studies of the Triassic and associated formations have been made in southeastern Utah and adjoining parts of Colorado and Arizona. These studies have followed five principal lines of investigation: regional stratigraphy, sedimentary petrology, pebble studies, sedimentary structure studies, and lithofacies studies."

Report discussing different types of uranium deposits found in Colorado mines and the geological guides which can help locate these deposits.

"This paper summarizes the results of the field studies of the Survey's Reconnaissance Group and outlines some geologic criteria that may be useful in guiding the search for uranium ore. The writers wish to acknowledge the cooperation of the minding companies and individuals who materially aided the program of investigations by reporting radioactive localities and by submitting samples of radioactive rocks and ores."