From Introduction: "A preliminary report of the work was published in April 1947, and this bulletin supplements Report of Investigations 4104 and describes the results of the entire investigation."

From introduction: This report summarizes the results of diamond-drill exploration by the U. S. Geological Survey in the vicinity of Moon and Horse Mesas during the period November 14, 1950 to January 26, 1952.

A report discussing the occurrence and chemical character of ground water in the Morrison Formation in Southeastern Colorado and Southeastern Utah.

This preliminary report summarizes the exploration done in the Long Park area from March 1951 to mid-November 1951.

Preliminary report regarding diamond-drill exploration on Outlaw Mesa, Mesa County, Colorado. Done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission

From introduction: From November 1949 to May 1952, the U. S. Geological Survey explored the Spud Patch area by diamond drilling to find carnotite deposits that would make new mines and to appraise the reserves of the area. Previous work and a brief outline of the general geology of the area have been reported (Bell and Icke, 1950; and Bell, 1952).

A report regarding Preliminary reserve statement 21, reserve blocks A and B, Spud Patch area, San Miguel County, Colorado

A report regarding Preliminary reserve statement 22, reserve block 7, Club Mesa, Montrose County, Colorado

This is a tectonic map of the Colorado Plateau.

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.

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.

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

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.

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 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.

Three maps illustrating distribution of metal deposits in metal-mining districts in Colorado. The first map is a geological survey indicating uranium deposits, rock characteristics, and the location of the Central Mining District in relationship to counties in Colorado. The second map shows pitchblende deposits and bostonite dikes in the Front Range Mineral Belt near Central City, Colorado. The third map near indicates the locations of pitchblende deposits alongside metal vein systems near Central City, Colorado

A Photogeologic map of the Mt. Peale-8 quadrangle, San Juan County, Utah, Montrose County, Colorado

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

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."

Discussing a reconnaissance of uranium-bearing deposits in the Yampa River Region, in Colorado