This report provides results from a preliminary study to determine rock types and alteration products that are responsible for an observed abundance of radioactive gas at the Trinity Gold Mine in Utah. It includes an overview of the study and the location, description of the methods and general statements, details about the structure, petrography and mineralogy, and a discussion of findings.

From abstract: The subsurface isorad method is an attempt to locate areas favorable for uranium ores by the use of contour maps which show localities having greater radioactivity. The construction of isorad maps entails the measurement of the area under the curve of a gamma-ray logo The figures obtained indicate relative amounts of gamma radiation and are used to locate the isorad contours. This work was started at Temple Mountain in the San Rafael Swell area during the spring of 1952. The purpose of this investigation is to determine the most effective and economic hole spacing for subsurface isorad work.

This report presents preliminary results of ground water, stream sediment, and stream water studies in the Delta and Richfield quadrangles in Utah.

Supplementary data containing a geologic plan of the Trinity Gold Mine to accompany a report on the Trinity Mines in Marysvale, Utah.

The purpose of this report is to present all pertinent geologic data on an area in which relatively imprtant uranium deposits are present.

A report and supporting maps on the Little Rockies District

A report discussing a study made of the Hite Section of the Glen Canyon Dam Immersion area to evaluate uranium occurrences and potentials.

A report discussing a geologic reconnaissance of a section of the Kaiparowits Plateau region of Utah was conducted to evaluate the uranium potential of the area.