Report issued by the Bureau of Mines over studies conducted on a coal-hydrogenation demonstration plant. The early operations of the demonstration plant are discussed. This report includes tables, illustrations, and photographs.

Abstract: A reconnaissance was made of a large part of the Powder River Basin, Wyoming, during the summer of 1952 to search for uranium deposits in parts of the basin other than the Pumpkin Buttes area. No uranium deposits of economic interest were found, but some rocks of the Tertiary Fort Union formation and the Cretaceous Inyan Kara group were found to be sufficiently uraniferous to justify further search in rocks of these units. Analyses of samples of sandstones, baked shales, and siltstones taken during the reconnaissance show these rocks are considerably more vanadiferous than the average sandstone, or clay and shale.

Report presenting the results of core drilling in Sweetwater county, Wyoming aimed at finding uraniferous coal. Information regarding the locations that were drilled, progress made in drilling, geology of the area, reserves of uraniferous coal, and future plans are included.

A report discussing the results of exploratory core drilling for uranium-bearing coal in the Northern Part of the Red Desert Area, in Sweetwater County, Wyoming.

Summarizing the findings of investigations of radiometrically anomalous areas and discussing recommendations for a diamond drilling program.

From abstract: The uranium deposits of the Mayoworth area, Johnson County. Wyo., are in oolitic limestone at the base of the Sundance formation of Late Jurassic age. The uranium mineral has been identified as metatyuyamunite, a hydrous calcium uranium vanadate, that coats joints and fractures and replaces calcite in both the cement and the oolites. The known deposits of the area are of sub-ore grade, have a high lime content, and are not of economic importance at this time.

Abstract: Uranium occurs in the North Park(?) formation of Pliocene(?) age in the Miller Hill area, about 25 miles south of Rawlins, Carbon County, Wyo. As much as 0. 5 percent uranium is contained in grab samples, but only about 1000 tons of rock are known to contain as much as 0. 03 percent uranium. Beds of brecciated, silicified limestone 3 to 10 feet thick contain the principal concentrations of uranium. Lesser concentrations are found in calcareous sandstone and quartzite. Uranophane, Ca(UOz)2SizO 7 . 6HZO, the principal uranium'mineral, has been deposited in vugs, as fracture and surface coatings, and as a disseminated constituent of the rock. Uranium also occurs in quantities too small to be megascopically visible in dark-colored chalcedony, lime stone, sandstone, and quartzite beds.

Report discussing an investigation of the geology of the Miller Hill area in Wyoming. This area's rocks were shown to contain varying amounts of uranium.

Abstract: This project was designed to test the chemical feasibility of depositing of depositing a primary uranium mineral from a pregnant solution by exposing the solution to natural gas in an environment favorable to such deposition.

The following report covers studies and investigations of uranium deposits in the Black Hills of South Dakota and Wyoming. The ore minerals include carnotite, tyuyamunite, metatyuyamunite, corvusite, rauvite, uraninite, and coffinite, as well as minor amounts of other uranium and vanadium minerals.

Maps show drilling plans in four areas of the the Silver Cliff Mine in Lusk, Wyoming.

Discussing the results of diamond drilling at the silver cliff mine in Lusk, Wyoming.

The following report is the first in a series of volumes presenting data recorded during the months of August and September, 1978, from a radiometric and magnetic survey taken in four quadrangles between Wyoming and southern Montana (Forsyth, Hardin, Sheridan, Arminto, Newcastle and Gillette)

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Arminto quadrangle in Wyoming.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Arminto quadrangle detail in Wyoming.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Arminto quadrangle detail in Wyoming.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Arminto quadrangle in Wyoming.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Sheridan quadrangle in Wyoming.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Sheridan quadrangle in Wyoming.

Documentation outlining characteristics of field data samples taken in the Edgemont detail area.

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

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

The following report presents results of the Edgement detailed geochemical survey. Field and laboratory data are presented for 109 groundwater and 419 stream sediment samples.

This report presents engineering data, statistics, and individual borehole histories of the 28 holes drilled in this project.