Abstract: San Miguel bench includes about 4 square miles in the southern part of T. 48 N., R. 17 W., New Mexico principal meridian, Montrose County, Colorado. Production of carnotite ore from the area has been about 15, 000 short tons having an estimated average graderof 0. 31 percent U3O8,and 1. 6 percent V2 05 Nearly all of the carnotite deposits occur in a single-continuous sandstone bed near the top of the Salt Wash member of the Jurassic Morrison formation. These deposits consist chiefly of sandstone impregnated with uranium- and vanadium-bearing minerals. They are irregular tabular-shaped masses ranging in size from a few short tons to 30, 000 short tons or more of minable carnotite ore. During the period November 27, 1951, to April 17, 1953, the U. S. Geological Survey drilled 309 holes totaling 92, 194 feet on the San Miguel bench. Reserves total about 43, 000 short tons of material 1 foot or more thick and contain 0,.10 percent or more U30 or 1. 0 percent or more V205. Of these reserves 3, 300 short tons occur in private land. These reserves are in ten deposits found by Geological Survey drilling. Potential reserves (reserves based on geologic evidence …

Report discussing the San Miguel bench and the production of carnotite from deposits consisting of sandstone with uranium- and vanadium-bearing minerals.

A report regarding development drilling on the Tiny claim, Gypsum Valley district, San Miguel County, Colorado

"This report consists of engineering details, statistics, and logistics of the 19 boreholes drilled in the project. Geophysical logs are included on microfiche in the back of this report." (from Introduction)

From Introduction: "The Cortez 1º x 2º Quadrangle, southwestern Colorado and southeastern Utah (Fig. 1), was studied to identify and evaluate areas and geologic formations that are favorable for the occurrence of uranium deposits of specific minimum size and grade."

From Introduction: "The Moab 1ºX2º Quadrangle, east-central Utah and west-central Colorado (Fig. 1) was studied to identify and evaluate areas and geologic formations that are favorable for the occurrence of uranium deposits of specific minimum size and grade."

Appendices containing data on uranium availability in the Moab Quadrangle to accompany a report on U.S. uranium resources in Colorado and Utah.

From introduction: The purpose of the investigation was to attempt to correlate anomalous radioactivity and mineral distribution in a metal-mining district that shows a distinct areal pattern of distribution of vein types,

Photomicrographs of core samples submitted for petrographic analysis from Moffat and Routt Counties in northwest Colorado collected for the Sand Wash Basin Drilling Project, which identified areas in the region favorable for uranium occurrences.

The purpose of this report is to summarize the information obtained by the project, to make geologic interpretations of the information, and to transmit the information and interpretations of the information to the U.S. Department of Energy and the Geology Division of Bendix Field Engineering Corporation, Grand Junction Colorado.

Logs describing lithologic characteristics of samples collected from the project area described using a binocular microscope or hand lens and recorded on standard Bendix Field Engineering Corporation (BFEC) logging forms.

Appendices containing data on uranium availability to accompany a report on U.S. uranium resources in the Craig Quadrangle, Colorado.

From Purpose and Scope of Study: "The purpose of this study is to provide an evaluation of the favorability of the Vernal, Colorado-Utah, 1º x 2º Quadrangle (Fig. 1) for the occurrence of uranium deposits. The study restricted to indicating geologic units and areas favorable for uranium deposits containing at least 100 tons of U3O8 with an average grade of .01 percent U3O8 or more and less than 1,500m (5,000 ft) deep."

Appendices containing data on uranium availability in the Vernal Quadrangle to accompany a report on U.S. uranium resources in Utah.

From Introduction: "The purpose of this study is to provide an evaluation of the favorability of the Craig 1º x 2º Quanrangle, Colorado (Fig. 1) for the occurrence of uranium deposits."

A study made of the joint patterns in four different formations exposed in Bull Canyon, and of favorable and unfavorable ground in the upper ore-bearing sandstone unit of the Salt Was member of the Jurassic Morrison formation.

From Introduction: "The Front Range region from the Wyoming-Colorado state line to southern Colorado is a uranium metallogenic province. Correspondingly, uranium has been discovered in mineable deposits in metamorphic, igneous, and sedimentary rocks formed throughout the geologic history of the region both within the Front Range itself and in the apron of sedimentary rocks that surrounds the Front Range. The Pueblo 1ºx2º National Topographic Map Series (NTMS) quadrangle, Colorado (Fig. 1), which lies within this uranium metallogenic providence, was evaluated to identify and delineate areas and geologic units that exhibit characteristics favorable for the occurrence of uranium deposits."

Appendices containing data on uranium occurrences in the Pueblo Quadrangle to accompany a report on U.S. uranium resources in Colorado.

Report discussing investigations seeking uranium in deposits of black shale around the geographical areas of the Western States

A report discussing development drilling on the Long Ridge group of claims, Gypsum Valley district, San Miguel County, Colorado

A report regarding development drilling on the Spectacle Point claim, Gypsum Valley district, San Miguel County, Colorado

A report vanadium-uranium ore in the J. J. mine in Montrose County, Colorado.

Introduction: Detailed geologic mine mapping and sampling of the J.J. mine in the Jo dandy area, Montrose County, Colo., were undertaken to study a vanadium-uranium ore body in terms of the physical relationships of ore to host rock, the paragenetic sequence of ore minerals, and the sequential development of an oxidized suite of ore minerals from unoxidized ore.

A report regarding Preliminary reserve statement 33, reserve block 1, South Radium group area, Slick Rock district, San Miguel County, Colorado