A 5 x 7 sepia print showing the Union Pacific 3985, 4-6-6-4 "Challenger", on a freight train near Speer, WY, 13 cars, 25 mph. [see also color print 2008.008.7109-7115]

A photograph print showing the Northern Pacific (NP) 1366, 4-6-0 (BLW), on a freight train, Huntsville, WY [Utah?].

A photograph print showing the Northern Pacific (NP) 1366, 4-6-0 (BLW class S-4), on a freight train, Huntsville, WY.

A photograph postcard showing Union Pacific (UP) 4007, 4-8-8-4, in Cheyenne, WY.

A photograph print showing Union Pacific (UP) 3563, 2-8-8-0, Cheyenne, WY.

A photograph postcard showing Union Pacific (UP) 3560, 2-8-8-0, Cheyenne, WY.

A photograph print showing Union Pacific (UP) 1731, 4-6-0, at Huntsville, WY.

A photograph postcard showing the Union Pacific (UP) 5516, 2-10-2, 5093, 4-10-2, 9010, 4-12-2, and 3709, 4-6-6-4, on westbound freight extra, near Ozone, WY, 68 cars, 30 mph.

A photograph postcard showing the Union Pacific (UP) 5516, 2-10-2, 5093, 4-10-2, 9010, 4-12-2, and 3709, 4-6-6-4, on westbound freight extra, near Buford, WY, 68 cars, 35 mph.

Interview with J. W. Buck, a highway construction worker, concerning his experiences while employed by the Civilian Conservation Corps during the Great Depression. Buck worked in camps in Globe Arizona; Miami, Arizona; and Veteran, Wyoming.

A report summarizing the geology of Crooks Gap, Fremont County, Wyoming, as related to Uranium Resources

Data gathered at stream sediment sites in the Laramie Range, including applicable water chemistry measurements (e.g., pH, conductivity, alkalinity) and elemental analyses.

Documentation outlining characteristics of field data samples taken in the Laramie Range.

Data gathered at well water sites in the Laramie Range, including applicable water chemistry measurements (e.g., pH, conductivity, alkalinity), physical measurements (e.g., temperature, well description, scintillometer readings), and elemental analyses.

Documentation outlining characteristics of field data samples taken in the Laramie Range.

A report regarding uranium-bearing coal in the Red Desert, Great Divide Basin, Sweetwater County, Wyoming. Concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

A study of the uranium deposits of the Hulett Creek area and T L Creek quadrangle was part of a regional project by the resource Division of the Atomic Energy

The accompanying map shows the results of an airborne radioactivity survey in an area of 800 square miles in Campbell and Johnson Counties, Wyoming.

Aerial image shows the result of an airborne radioactive survey over an area of 65 square miles in the vicinity of Miller Hill, Carbon County, Wyoming with the approximate location of eleven radioactivity anomalies found. Text describes methods used and discusses the anomalies.

Aerial image shows the result of an airborne radioactive survey over an area of 154 square miles in Uinta County, Wyoming with the approximate location of one radioactivity anomaly found. Text describes methods used and discusses the anomaly.

A report discussing data collected during a geochemical survey for uranium in the southern Powder River Basin

The following report gives detailed results of the geochemical survey taken on the eastern flank of the Laramie Range and the northwestern edge of the Denver Basin in southeastern Wyoming. Field and laboratory data are presented for 163 groundwater and 800 stream sediment samples, and field radiometric data are presented for 103 rock samples.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Ogden and Salt Lake City quadrangles including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.

Surface remediation was completed at the former uranium mill site in Riverton, Wyoming, in 1990. Residual radioactive materials (contaminated soil and debris) were removed and disposed of at Union Carbide Corporation`s (Umetco) nearby Gas Hills Title 2 facility. Ground water in the surficial and semiconfined aquifers (known collectively as the `uppermost aquifer`) below the former mill and tailings site has been contaminated. No contamination has been detected in the deeper, confined sandstone aquifer. The contaminant plume extends off site to the south and east. The plume is constrained by surface wetlands and small streams to the east and west of the site and by the Little Wind River to the south. Fifteen monitor wells installed in 1993 were sampled to better define the contaminant plume and to provide additional water quality data for the baseline risk assessment. Samples also were collected from domestic wells in response to a request by the Wyoming Department of Environmental Quality in January 1994. No contamination attributable to the former uranium milling operations have ever been detected in any of the domestic wells used for potable supplies.