Report issued by the Bureau of Mines over an annual study of synthetic liquid fuel production. Results of the annual study are presented and discussed. This report includes maps, tables, illustrations, and photographs.

From abstract: An airborne radioactivity survey of a selected area in the Red Desert, Sweetwater County, Wyoming, containing outcrops of radioactive lignites and shales of known surface extent and uranium content, was flown on flight lines at three levels, respectively 250, 500, and 1,000 feet above the ground and spaced at one-quarter mile intervals. Measurements from three identical dual-channel radiation detectors were simultaneously recorded to obtain data at various distances from natural radioactive sources of known configuration. The radiation intensity measurements were fully corrected for all extraneous effects and were compiled as profiles of radiation intensity, as an isoradioactivity contour map, and as curves showing the relationship between radiation intensity and distance from the source.

From abstract: A sequence of slightly radioactive Pliocene(?) rocks in the Split Rock area of central Wyoming is at least 600 feet thick, underlies an area of more than 25 square miles, and consists of alternating beds of tuffaceous shale, sandstone, and pumicite. Only a small part of the section has been examined. In addition to the uranium content of the strata, there has been secondary concentration of uranium in brecciated limestone similar to spring deposits that could be of Pliocene or Pleistocene age.

The existing switchyards at Western Area Power Administration's (WESTERN) Seminoe and Kortes facilities, located approximately 40 miles northeast of Rawlines, Carbon County, Wyoming, were constructed in 1939 and 1951, respectively. The circuit breakers at these facilities are beyond or approaching their service life and need to be replaced. In addition, the switchyards have poor access for maintenance and replacement of equipment, and their locations create potential for oil spills into the North Platte River. WESTERN is proposing to consolidate the switchyard facilities into one new substation to provide easier access, restore proper levels of system reliability, and decrease the potential for oil contamination of the river. This environmental assessment (EA) was prepared to evaluate the impacts of the proposed Seminoe-Kortes Consolidation Project. 57 refs., 12 figs., 8 tabs.

"This report presents engineering details, statistics, individual borehole histories, and geophysical logs of the four holes drilled in the Great Divide Basin, Wyoming, during the May 1980 drilling project." (from Introduction)

From introduction: This report details the reconnaissance for uraniferous lignites in North Dakota, South Dakota, Montana, and Wyoming during 1948 and 1949.

From abstract: Uranium minerals were discovered in the Pumpkin Buttes area, Campbell and Johnson Counties by the U. S. Geological Survey in October 1951. From June to November 1952, an area of about 750 square miles was examined for uranium deposits, and 211 localities with abnormally high radioactivity were found; uranium minerals are visible at 121 of these localities.

Data collected as part of Cheyenne quadrangle, Wyoming including laboratory data on waters and sediments as well as field data.

The following report covers a reconnaissance for new discoveries of radioactive lignite deposits in the Green River Basin and Uinta Basin of Wyoming and Utah where similar discoveries to previous studies in North Dakota, South Dakota, Montana, and Wyoming were made. Additionally, there were new prospects examined, as well as reconnaissance for uranium deposits.

The following report covers the Petrographic study of Early Cretaceous age sandstone beds in the Fall River formation and the Fuson-Lakota formations, as well as Late Jurassic age beds in the underlying Unkpapa and Morrison formations along the western side of the Black Hills.

Report discussing a geological study performed to find uraniferous lignites in North Dakota, Eastern Montana, north-central Wyoming, and northwestern South Dakota. "Deposits of uraniferous lignites were discovered at Blue Buttes, eastern Montana; and at North Cave Hills, South Cave Hills, and at Slim Buttes in northwestern South Dakota."

Report discussing the reconnaissance for radioactive uraniferous rocks in parts of Colorado, Wyoming, and Utah. Regional geology of each area, results of regional reconnaissance, and miscellaneous prospects are included.

Report discussing the U.S. Geological Survey's investigation of the stratigraphy of the Phosphoria formation in Wyoming and the phosphate deposits in this area. Analytical data and abstracts of stratigraphic sections of many locations in this area are included.

Report discussing the investigation of 750 square miles of land in Wyoming aimed at locating uranium deposits. Information regarding the area, uranium deposits, mineralogy, and results of the exploration are included.

Appendices containing data on uranium availability in the Ashton Quadrangle to accompany a report on U.S. uranium resources in Idaho, Montana, and Wyoming.

Appendices containing supplementary data on uranium occurrences in the Lander Quadrangle in addition to a table of chemical analyses, a well list, and petrology reports to accompany a report on U.S. uranium resources in Wyoming.

From summary: This report contains data collected during a geochemical survey for uranium in the Torrington National Topographic Map Series (NTMS) quadrangle of east-central Wyoming (Fig. 1) by the Los Alamos Scientific Laboratory (LASL) as part of the nationwide Hydrogeochemical and Stream Sediment Reconnaissance (HSSR).

From introduction: The purpose of the study was to describe the differences between ponds that developed within and abandoned mine site and in control ponds not affected by mining.

From Abstract: "Field and laboratory data are presented for 884 water samples and 598 sediment samples from the Cheyenne Quadrangle, Wyoming. Uranium values have been reported by Los Alamos National Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee."

From Introduction: "The Lander Quadrangle, Wyoming (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. Favorable areas are those that are capable of containing uranium deposit of at least 100 tons of U3O8 in rocks with a minimum average ore grade of 0.01%."

From introduction: This report contains data collected during a geochemical survey for uranium in the Torrington National Topographic Map Series (NTMS) quadrangle of east-central Wyoming (Fig. 1) by the Los Alamos Scientific Laboratory (LASL) as part of the nationwide Hydrogeochemical and Stream Sediment Reconnaissance (HSSR).

This is a preliminary map of the east-west cross section, Powder River Basin, Wyoming.

A report regarding petrographic study of sandstone of the Inyan Kara group and associated rocks in the Black hills, Wyoming and South Dakota

"his interim report presents the grade and tonnage data collected during exploration at the Lost Creek schroeckingerite deposit, Sweetwater County, Wyoming, Between July 1951 and February 1952. Discussions of he geologic results of exploration (lithology, mineralogy, structure, origin, etc.) are not included in this report and consequently the detailed lithology and structure have been omitted from the illustrations (figs. 1-7)"