Introduction: This report presents engineering details, statistics, individual borehole histories, and geophysical logs of the nine holes drilled in the Great Divide Basin 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.

Supplementary data containing geophysical logs for drilling hole BRD-18 to accompany an engineering report on the Great Divide Drilling Project in Sweetwater County, Wyoming.

Plates accompanying report on the Pedro Mountain Drilling Project: a chart illustrating the core lithology of Pedro Mountain No. 1 drill hole; an illustration of the directional survey created by the Seismographic Service Corporation's Birdwell Division; a compiled graph of the caliper, gross gamma, neutron-neutron, and magnetic susceptibility logs created by Bendix Field Engineering Corporation (BEFC) Advanced Technology Division; and an illustration of the BFEC spectral gamma (KUT) log, showing potassium (in PCT) and uranium and thorium (in PPM).

This report follows the cooperative drilling project between the U.S. Energy Research and Development Administration (ERDA) and the U.S. Geological Survey (USGS) for the coring of granite in the Pedro Mountains of Carbon County, Wyoming.

Thirty-six color photomicrographs of thin sections of selected rock samples collected for analysis from the Copper Mountain District of central Wyoming.

"This report presents the results of Multidisciplinary investigations of uranium deposits in the Copper Mountain District of central Wyoming."

Geophysical logs, created by the Seismographic Service Corporation's Birdwell Division, accompanying report on the Pedro Mountain Drilling Project showing gammy-ray neutron, density, temperature, three-dimensional velocity, electric, and caliper (see pages 10-11 of report). Each represents data collected from the core hole drilled in granite in Carbon County, Wyoming in May 1976.

Report detailing uranium and other elemental data resulting from the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) of 355 water and 1376 sediment samples collected from 1443 locations in the Lander National Topographic Map Series (NTMS) quadrangle, Wyoming, by the Los Alamos Scientific Laboratory.