From project objectives: The Sonora Pass region was identified by the U. S. Department of Energy (DOE) as a potential uranium resource area because of past uranium production at the Juniper Mine and reported high-grade occurrences in other buried fluvial channels which are Tertiary in age. The objective of the Sonora Pass drilling project was to obtain subsurface data that would increase the accuracy of uranium reserve estimates for the project area.

Supplementary data containing information on geology, drill sites, and sample locations to accompany a report on geology and uranium favorability in Alpine and Tuolumne Counties, California. Scale 1:48,000

Photographs taken during a project to study the geology of the Sonora Pass Region in California. An index describing the images is on page143/144 of the accompanying report.

A report regarding uranium distribution in relation to sedimentary facies located in Kern Lake, California.

Report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Ukiah quadrangle in California, including data acquisition methods, a summary of data and outline of data presentation, area geology, and interpretation of results.

Report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Weed quadrangle in California, including data acquisition methods, a summary of data and outline of data presentation, area geology, and interpretation of results.

Second report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Ukiah quadrangle in California, including histograms and multi parameter profiles, with anomaly maps and flight path maps.

Second report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Weed quadrangle in California, including histograms and multi parameter profiles, with anomaly maps and flight path maps.

Second report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Alturas quadrangle in California, including histograms and multi parameter profiles, with anomaly maps and flight path maps.

Second report documenting results of an airborne high-sensitivity gamma-ray spectrometer and magnetometer survey of the Chico quadrangle in California, including histograms and multi parameter profiles, with anomaly maps and flight path maps.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Weed quadrangle in California.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Weed quadrangle in California.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Ukiah quadrangle in California.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Ukiah quadrangle in California.

The second volume of a report regarding an airborne gamma-ray spectrometer and magnetometer survey of the Eureka Quadrangle in California. This report is a result of work performed by Aero Science Division Western Geophysical Company of America through a Bendix Field Engineering Corporation Subcontract, as part of the National Uranium Resource Evaluation.

The second volume of a report regarding an airborne gamma-ray spectrometer and magnetometer survey of the Susanville Quadrangle, in California.

The second volume of a report regarding an airborne gamma-ray spectrometer and magnetometer survey of the Redding Quadrangle, California.