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The Leadville Drainage Tunnel, Lake County, Colorado

Description: Report issued by the Bureau of Mines over the Leadville Drainage Tunnel. Descriptions and details about the tunnel are presented. This report includes tables, maps, illustrations, and photographs.
Date: August 1949
Creator: Elgin, Robert A.; Volin, M. E. & Townsend, James W.
Partner: UNT Libraries Government Documents Department
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Effect of Oil-Base Drilling Fluid Filtrate on Analysis of Cores from South Coles Levee, California, and Rangely, Colorado Fields

Description: Report issued by the U.S. Bureau of Mines on the study of contamination of cores obtained with conventional core barrels. The effect of the oil-based drilling fluid and analysis of the cores are presented. The report includes tables, graphs, and illustrations.
Date: August 1950
Creator: Gates, Gates L.; Morris, Frank C. & Caraway, W. Hodge
Partner: UNT Libraries Government Documents Department
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Size Consist, Chemical Analysis, and Physical Properties of 2-1/2-Inch Subbituminous Slack from the Denver, Colorado Region

Description: Report issued by the U.S. Bureau of Mines on sub-bituminous slack from Denver, Colorado. The characteristics and properties of 2-1/2 inch slack samples are listed. This report includes tables, graphs, maps, illustrations, and photographs.
Date: August 1942
Creator: Parry, V. F. & Landers, W. S.
Partner: UNT Libraries Government Documents Department
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Exploration of the Big Boulder Prospect, Larimer County, Colorado

Description: From introduction: The Big Boulder prospect is in SE 1/4 sec. 36, T.7N., R.,72W., in Tarimer County, Colorado. The prospect has been opened by four irregular trenches and shallow cuts, and a 10-foot discovery shaft. Hanley 1/4 states that 10.5 tons of beryl were produced from the Big Boulder prospect in 1936, and about 600 pounds in 1941.
Date: August 1950
Creator: Thurston, W. R.
Partner: UNT Libraries Government Documents Department
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User Coupled Confirmation Drilling Program Case Study: City of Alamosa, Colorado, Alamosa No. 1 Geothermal Test Well

Description: A 7118 ft (2170 m) deep geothermal test well was drilled on the south edge of the city of Alamosa, Colorado as part of the Department of Energy's User Coupled Confirmation Drilling Program. The project was selected on the bases of a potential direct heat geothermal resource within the Rio Grande rift graben and resource users in Alamosa. The well site was selected on the hypothesis of a buried horst along which deep thermal fluids might be rising. In addition, there were city wells that were an… more
Date: August 1985
Creator: Zeisloft, J. & Sibbett, B. S.
Partner: UNT Libraries Government Documents Department
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Development of a gas-to-particle conversion model for use in three-dimensional global sulfur budget studies. Final report, 1 August 1991--30 June 1992

Description: A fully-parameterized model for the formation and growth of aerosols via gas-to-particle conversion has been developed and tested. A particularly significant contribution is a new method for the prediction of numbers of particles nucleated using information on the vapor source rate, relative humidity, and preexisting aerosol alone, thus eliminating the need to solve a system of coupled ODEs. Preliminary tests indicate substantial reduction in computational costs, but it is recommended that the … more
Date: August 1, 1993
Creator: Kreidenweis, S. M.
Partner: UNT Libraries Government Documents Department
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Effects of Vegetation of Radon Transport Processes in Soil: The Origins and Pathways of {Sup 222}Rn Entering Into Basement Structures. Final Report, March 15, 1987--May 15, 1993

Description: The entry rate of {sup 22}Rn into a basement structure was measured continuously. These measurements demonstrated that radon entry did not vanish even when the structure was slightly pressurized. This persistent entry has been determined to be dominated by diffusion through the floor and walls and a combination of diffusion and convection through the floor-wall joint. The highest indoor radon concentrations occurred during calm periods when the pressure differentials between the inside and outs… more
Date: August 1, 1992
Creator: Borak, T. B.
Partner: UNT Libraries Government Documents Department
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Capillary discharge extreme ultraviolet lasers. Progress report, December 15, 1991--December 14, 1992

Description: The project objective is to explore the generation of soft X-ray laser radiation in a plasma column created by a fast capillary discharge. The proposed capillary lasing scheme offers the potential for compact, simple and efficient soft X-ray laser sources. For this purpose a compact, fast pulse generator which produces 100 kA current pulses with a risetime of 11 ns was constructed. Initial experiments were conducted in evacuated capillaries, in which the plasma is produced by ablation of the ca… more
Date: August 1, 1992
Creator: Rocca, J. J.
Partner: UNT Libraries Government Documents Department
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Preliminary Evaluation of the Uranium Favorability in the Area Northeast of Gunnison, Colorado

Description: Rock and stream-sediment samples were collected to define areas favorable for uranium deposits northeast of Gunnison, Colorado. Areas considered most favorable for further exploration are: (1) the Bronco Mountain area, approximately 10 mi south of Taylor Park Reservoir, (2) the area near the Big Red mine, and (3) the area 5 mi north-northeast of Taylor Park Reservoir. On the basis of known deposits in the Marshall Pass and Cochetopa districts, fault contacts between Precambrian granites and Pal… more
Date: August 1977
Creator: Gallagher, Gerald L.; Edmond, C. Lorraine & D'Andrea, Ralph F., Jr.
Partner: UNT Libraries Government Documents Department
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Uranium Concentrations in Natural Waters, South Park, Colorado

Description: The following report describes the study of sediment in South Park, Colorado, the study taking 464 water samples to test for uranium in the Rocky Mountains.
Date: August 1976
Creator: Sharp, Robert R., Jr. & Aamodt, Paul L.
Partner: UNT Libraries Government Documents Department
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Detailed Mineral and Chemical Relations in Two Uranium-Vanadium Ores

Description: From introduction: This report details mineral and chemical relations in two uranium-vanadium ores of the Colorado Plateau.
Date: August 1956
Creator: Garrels, Robert M.; Larsen, E. S., III; Pommer, Alfred M. & Coleman, Robert Griffin
Partner: UNT Libraries Government Documents Department
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Relation of Uranium to Hypogene Mineral Zoning in the Front Range Mineral Belt, Colorado

Description: From abstract: Many of the mining districts of the Colorado Front Range mineral belt contain mesothermal sulfide ores that exhibit a zonal distribution. Present data indicate that in most of the zoned districts pitchblende and/or secondary uranium minerals are most abundant in a transition zone between central areas containing predominantly pyritic gold ores and peripheral areas containing dominantly lead-zinc-silver deposits. Copper in the form of chalcopyrite is also probably more abundant in… more
Date: August 1955
Creator: Wallace, S. R.; Leonard, B. F. & Campbell, Russell H.
Partner: UNT Libraries Government Documents Department
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Some Natural Variations in the Relative Abundance of Copper Isotopes

Description: Abstract: "The relative isotopic abundance of copper has been measured in a number of minerals. Suites of samples from Michigan and the Colorado Plateau have been examined to determine if local variations due to isotopic exchange or diffusion could be found. The relative isotopic abundance of copper in specimens from a number of other places was also determined. The variations noted were small but in most cases were felt to be significant because they were larger than the experimental error (0.… more
Date: August 1957
Creator: Walker, Edward C.; Cuttitta, Frank & Senftle, Frank E.
Partner: UNT Libraries Government Documents Department
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Some Thermodynamic Relations Among the Uranium Oxides and Their Relation to the Oxidation States of the Uranium Ores of the Colorado Plateaus

Description: Report discussing uranium oxides, their thermodynamic relations, and how these relations connect to the oxidation states of uranium ores found at the Colorado Plateaus. This report provides information regarding thermodynamic properties of some compounds and ions of the U-O-H2O system, discussion and interpretation of thermodynamic properties, and a summary with conclusion.
Date: August 1954
Creator: Garrels, Robert M.
Partner: UNT Libraries Government Documents Department
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Wet Mountains, Colorado, Thorium Investigations 1952-1954

Description: A report about a 22-square mile tract of pre-Cambrain rocks and veins containing thorium mapped at the scale of 1:6,000 located on the west flank of the Wet Mountains, Custer and Fremont Counties, northeast of Westcliffe, Colorado.
Date: August 1954
Creator: Christman, R. A.; Brock, M. R.; Pearson, R. C. & Singewald, Q. D.
Partner: UNT Libraries Government Documents Department
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Detailed Mineral and Chemical Relations in Two Uranium-Vanadium Ores

Description: The following report analyzes channel samples from two mines (Mineral Joe No. 1 and Virgin No. 3) on the Colorado Plateau that have been studied in detail both mineralogically and chemically.
Date: August 1956
Creator: Garrels, R. M.; Larsen, E. S., (3d.); Pommer, A. M. & Coleman, R. G.
Partner: UNT Libraries Government Documents Department
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Exploration for Uranium-Vanadium Deposits in the Beaver Mesa Area: Mesa County, Colorado, and Grand County, Utah

Description: Report discussing the U.S. Geological Survey's exploration aimed at locating uranium-vanadium deposits of the Beaver Mesa area. The report provides information regarding the geology of the area, uranium-vanadium deposits, the U.S. Geological Survey's exploration, reserves, and plans/recommendations.
Date: August 1956
Creator: Eicher, L. J.
Partner: UNT Libraries Government Documents Department
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