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.

From Introduction: "The Walker Lake 1ºx2º quadrangle (Fig. 1), California and Nevada, was evaluated to identify and delineate areas and geologic units that exhibit characteristics favorable for the occurrence of uranium deposits, as defined in Mickle and Mathews (1978)."

From Introduction: "The Reno Quadrangle, Nevada and California (Fig. 1), was evaluated to a depth of 1500 m (5,000 ft) to identify geologic environments and delineate areas that exhibit characteristics favorable for uranium deposits. Favorable environments are those that could contain at least 100 tons U3O8 at an average grade of at least 0.01% U3O8."

From Purpose and Scope: "The Trona Quadrangle in the southeastern desert of California (Fig. 1) was evaluated to identify and delineate areas and geologic units that exhibit characteristics favorable for the occurrence of uranium deposits. It consisted of three phases: Phase I (6.0 man-months) encompassed literature review, preliminary map preparation, and preparation of a work plan. Phase II (23.4 man-months) consisted of fieldwork and data gathering. Phase III (5.1 man-months) concerned data evaluation and completion of this report."

From Introduction: "The Klamath Falls Quadrangle, in south-central Oregon between lat 42º and 43º N. and long 120º and 122º W. (Fig. 1), was evaluated to identify geologic environments and delineate areas with characteristics favorable for the occurrence of uranium deposits."

From Introduction: "The Las Vegas Quadrangle, Nevada, Arizona, and California (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for uranium deposits."

From Introduction: "The Vya 2º quadrangle (Fig. 1), in northwestern Nevada and small portions of California and Oregon, was evaluated to identify geologic environments and to delineate areas that have characteristics favorable for uranium deposits. Reconnaissance sampling in the Vya Quadrangle began in 1978, but final evaluation of the uranium favorability of the quadrangle was began in 1978, but final evaluation of the uranium favorability of the quadrangle was begun in June 1980."

From Introduction: "The Kingman Quadrangle, Arizona, Nevada, and California (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for uranium deposits.

Appendices containing uranium occurrence data in the Kingman Quadrangle, in addition to chemical analyses data to accompany a report on U.S. uranium resources in Arizona, Nevada, and California.

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

Appendix containing data on uranium availability in the Las Vegas Quadrangle to accompany a report on U.S. uranium resources in Nevada, Arizona, and California.

Appendices containing data on uranium availability in the Walker Lake Quadrangle to accompany a report on U.S. uranium resources in California and Nevada.

Appendices containing data on uranium availability in the Vya Quadrangle to accompany a report on U.S. uranium resources in Nevada, Oregon, and California.

Supplementary data containing uranium occurrence reports to accompany a report on U.S. uranium resources in the Reno Quadrangle, Nevada and California.

Appendix containing data on uranium availability in the Trona Quadrangle to accompany a report on U.S. uranium resources in California.

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.

This report is the first volume of a two-part set documenting the results of the analyses of the airborne gamma radiation and total magnetic field survey that was flown for the Needles National Topographic Map NI11-6.

This report is the second volume of a two-part set documenting the results of the analyses of the airborne gamma radiation and total magnetic field survey that was flown for the Needles National Topographic Map NI11-6. This volume includes the flight line magnetic field, temperature, pressure, altitude data plus magnetic field data as measured at a base station.

The following report is the second volume in a series of reports documenting airborne gamma-ray spectrometer and magnetometer survey results. The data on this report focuses on the Las Vegas quadrangle.

The following report is the second volume in a series of reports documenting airborne gamma-ray spectrometer and magnetometer survey results. The data on this report focuses on the Kingman quadrangle.

"The results of analyses of the airborne gamma radiation and total magnetic field survey flown for the region identified as the Death Valley National Topographic Map NJ11-11 is presented in this report"--Abstract.

First volume of a final report documenting the results of an airborne radiometric and magnetic survey in a portion of southern California, including a description of the survey methods, calibration of the systems, data processing and displays, and interpretation methods.

Second volume of a final report documenting the results of an airborne radiometric and magnetic survey in a portion of southern California, including data displays and interpretation results for the Los Angeles quadrangle.

Second volume of a final report documenting the results of an airborne radiometric and magnetic survey in a portion of southern California, including data displays and interpretation results for the San Bernardiono quadrangle.