Introduction: This report presents engineering details, statistics, individual borehole histories, and geophysical logs of the eleven holes drilled in the McDermitt caldera project during the 1981 drilling program. General information is presented regarding specific problems, including weather and logistics. A separate geologic report is being prepared and will be available through the Bendix Field Engineering Corporation Technical Library in the near future.

The following data report presents results of ground water and stream sediment reconnaissance in the Walker Lake quadrangle, California and Nevada.

Supplementary data containing geophysical logs to accompany an engineering report on the McDermitt Caladera Drilling Project in Nevada and Oregon.

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.

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."

Symbol plot maps, histograms, and frequency distribution plots for U, Th, Hf, Ce, Fe, Mn, Sc, Na, Ti, and V elements; U/Th and U/Hf elemental ratios; and scintillometer readings for the S0 coarse (>420 mu/m to <1000 mu/m) sediment samples.

Symbol plot maps, histograms, and frequency distribution plots for U, Th, Hf, and Ce elements, U/Th and U/Hf elemental ratios, and scintillometer readings for the S0 coarse (>420 mu/m to <1000 mu/m) sediment samples.

Symbol plot maps, histograms, and frequency distribution plots for U, Th, Hf, Ce, Fe, Mn, Sc, Na, Ti, and V elements; U/Th and U/Hf elemental ratios; and scintillometer readings for the S1 fine (<149 mu/m) sediment samples.

"This document provides a detailed description of Data Reports of the western quadrangles that have been prepared by Savannah River Laboratory (SRL) personnel for the National Uranium Resource Evaluation (NURE) program. The Guide includes descriptions of (1) sample collection and field measurements; (2) format, abbreviations, and codes used in data tables; (3) graphical presentation and maps; and (4) quality assurance programs for sample collection and analysis." (Abstract)

Symbol plot maps, histograms, and frequency distribution plots for U, Th, Hf, Ce, Fe, Mn, Sc, Na, Ti, and V elements, U/Th and U/Hf elemental ratios, and scintillometer readings for the S1 fine (<149 mu/m) sediment samples.

The following data contains tabulated reconnaissance data and elemental concentrations in ground water (A-1 and A-2) and sediment (B-1, B-2, and B-3).

The following data report presents results of ground water and stream sediment reconnaissance in the Reno quadrangle, Nevada.

Graphs plotting the uranium and conductivity distribution in the ground waters of the Reno quadrangle.

A report regarding a mineral evaluation of part of the Gold Butte district, in Clark County, Nevada

The following data contains tabulated reconnaissance data and elemental concentrations in surface and ground water samples.

"This document provides a detailed description of Data Reports of the western quadrangles that have been prepared by Savannah River Laboratory (SRL) personnel for the National Uranium Resource Evaluation (NURE) program. The Guide includes descriptions of (1) sample collection and field measurements: (2) format, abbreviations, and codes used in data tables: (3) graphical presentation and maps: and (4) quality assurance programs for sample collection and analysis." (Abstract)