Resource Type
Collection
Serial/Series Title
United States Geological Survey Reports
12
Trace elements investigations report
5
Water Resources Investigations Reports
3
United States Bureau of Mines Reports
2
Geological Survey bulletin
1
Geological Survey professional paper
1
Report of investigations (United States. Bureau of Mines)
1
Trace elements memorandum report
1
U.S. Geological Survey bulletin
1
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84 Matching Results
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Wheeled Gang Plow
Patent for a wheeled gang plow. "This invention relates to improvements in motor drawn wheeled gang plows of the disk type" (lines 13-15). Illustrations included.
Date:
August 6, 1912
Creator:
Weiler, Nicholas
Object Type:
Patent
System:
The Portal to Texas History
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses
From Significance and value of Analyses of Coal: "The analyses published in this report cover samples of coal collected in many different parts of the country with unusual care by experiences men, in such manner as to make them representative of extensive beds of coal."
Date:
1913
Creator:
Lord, N. W.
Object Type:
Report
System:
The UNT Digital Library
Report of factual data obtained during examination of Copper King shaft, Black Hawk claim no. 1, Larimer County, Colorado
A report regarding factual data obtained during an examination of the copper King Shaft, Black Hawk Claim no. 1, Larimer County, Colorado. This report is designed to provide the owners with the factual data obtained from their property in accordance with the Agreement for Mineral Exploration with them.
Date:
May 1950
Creator:
Granger, H. C. & King, Robert Ugstad
Object Type:
Report
System:
The UNT Digital Library
Exploration of the Big Boulder Prospect, Larimer County, Colorado
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.
Object Type:
Report
System:
The UNT Digital Library
Treasure Hill Area, Larimer County, Colorado
Abstract: The Treasure Hill area consists of eight mining-lode claims in secs. 10 and 15, T. 9 N., R. 70 W., Larimer County, Colo. All of the workings were examined and samples were taken from most of them. The results of the examination indicate that there is little or no detectable radioactivity in the schist and granite of the area.
Date:
December 20, 1951
Creator:
Wyant, Donald G.
Object Type:
Report
System:
The UNT Digital Library
Pegmatites of the Crystal Mountain District, Larimer County, Colorado
From introduction: The study of the Crystal Mountain district, Larimer County, Colo., is but one phase of this post-World War II pegmatite program, in part carried out by the Geological Survey on behalf of the Division of Raw Materials of the Atomic Energy Commission.
Date:
April 1952
Creator:
Thurston, William R.
Object Type:
Report
System:
The UNT Digital Library
Pegmatites of the Crystal Mountain District, Larimer County, Colorado
Report discussing the geology of the pegmatites in the Crystal Mountain district in Larimer County, Colorado.
Date:
April 1952
Creator:
Thurston, William R.
Object Type:
Report
System:
The UNT Digital Library
Geology of the Copper King Mine Area, Prairie Divide, Larimer County, Colorado
Report discussing the geology of the Copper King mine area, which was worked for uranium following the discovery of pitchblende. The geology of the site is described as well as the history of the area's production.
Date:
December 1952
Creator:
Sims, Paul K. & Phair, George
Object Type:
Report
System:
The UNT Digital Library
Geology of the Copper King Mine area, Prairie Divide, Larimer County, Colorado
"This report, prepared principally to aid in the interpretation of the core drilling, presents the principal results of the field and preliminary laboratory work by the U.S. Geological Survey; it does not contain information obtained from the core drilling."
Date:
December 1952
Creator:
Sims, P. K. & Phair, George
Object Type:
Report
System:
The UNT Digital Library
Pegmatites of the Crystal Mountain District, Larimer County, Colorado
From abstract: The Front Range of Colorado is composed chiefly of schists of the Idaho Springs formation of pre-Cambrian age which have been intruded by a variety of granitic batholiths. In the Crystal Mountain district the Mount Olympus granite, a satellite of Fuller's Longs Peak batholith, forms sills and essentially concordant multiple intrusions in quartz-mica schist that dips southward at moderate to steep angles. A great number of pegmatites accompanied and followed the intrusion of the sills and formed concordant and discordant bodies in schist and granite.
Date:
1955
Creator:
Thurston, William R.
Object Type:
Report
System:
The UNT Digital Library
Geology of the Copper King uranium mine, Larimer County, Colorado
A report regarding the geology of the Copper King Uranium Mine, in Larimer County, Colorado.
Date:
June 1955
Creator:
Sims, P. K.; Phair, George & Moench, Robert Hadley
Object Type:
Report
System:
The UNT Digital Library
Hyatt Rach Pegmatite, Larimer County, Colorado
Report issued by the Bureau of Mines over studies conducted on Larimer County pegmatite deposits. Descriptions of the deposits are presented. This report includes tables, maps, photographs, and illustrations.
Date:
1960
Creator:
Gilkey, Millard M.
Object Type:
Report
System:
The UNT Digital Library
Radon Progeny Control in Buildings. Final Report
None
Date:
May 1, 1973
Creator:
Culot, M.V.J.; Olson, H.G. & Schiager, K.J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Colorado State University Solar Heated and Cooled House
None
Date:
January 1, 1974
Creator:
Lof, G.O.G.
Object Type:
Article
System:
The UNT Digital Library
Design, Construction, and Testing of a Residential Solar Heating and Cooling System. Progress Report, 1 September 1973--31 January 1974
None
Date:
March 1, 1974
Creator:
Lof, G.O.G. & Ward, D.S.
Object Type:
Report
System:
The UNT Digital Library
General Circulation of the Atmosphere and Weather in the Mediterranean
The occurrence of mistral winds in the Mediterranean shows a correlation with blocking activity over the eastern Atlantic. Apparently for this reason periods with a ''midwinter dip'' in the zonal available potential energy of the northern hemisphere are favored by mistral occurrence. There also is a tendency for a 22- to 26-day cycle to appear in pressure gradients at the 500- and 100-mb surfaces along the southern coast of France. Such pressure gradients, if they exceed a certain magnitude, are indicative of mistral episodes.
Date:
January 1, 1976
Creator:
Reiter, Elmar R.
Object Type:
Article
System:
The UNT Digital Library
Exploratory Study of Metal Vapor Lasers Operating in the Ultra-Violet at Kilowatt Power Levels. Technical Progress Report, June 1, 1975--May 1, 1976
Three laser research programs are proposed: (1) to find new laser systems in the wavelength region between 2000 and 4500 A; (2) to attempt scaling lasers to high output power; and (3) to focus research on metal vapor laser systems which have promise of high efficiency. Twenty-eight new laser transitions from Cu II spanning the wavelength region from 2486 to 7988 A have been observed. A list of papers and conferences are given that summarize the metal vapor laser research. (TFD)
Date:
March 1, 1976
Creator:
Collins, G.J.
Object Type:
Report
System:
The UNT Digital Library
Fluxes of Tracers in Wind and Water Tunnels
The absorption process of particulate matter at an air-water interface was studied by means of a Monte Carlo Simulation. This absorption process does not appear to be significantly different from similar processes over stationary boundaries. Especially an increased flux toward the boundary as the result of more effective particle removal due to wave action could not be observed. The particular nature of the tracer prevents this from happening.
Date:
March 1, 1976
Creator:
Gessler, J.
Object Type:
Report
System:
The UNT Digital Library
Ground-Water Resources of the Alluvial Aquifers in Northeastern Larimer County, Colorado
From introduction: Ground water is a source of municipal, domestic, stock, and irrigation water supply for most of northeastern Larimer County, Colorado. This report presents the results of a study made to determine the quantity, availability, and quality of the ground water. This information should be useful particularly for land-use planning and the utilization and protection of the ground-water resources.
Date:
January 1977
Creator:
Hurr, R. Theodore & Schneider, Paul A., Jr.
Object Type:
Report
System:
The UNT Digital Library
Steady-State Thermomechanical Finite Element Analysis of Elastoviscoplastic Metal Forming Processes
Extrusion and rolling processes exhibiting large amounts of plastic flow are analyzed using a finite element technique that is based on a modified creeping viscous flow approximation. The technique, called the initial stress-rate method, iteratively corrects creeping viscous flow solutions to generate results that include elastic response. The momentum equations have been coupled with the energy equation to provide the capability to predict thermomechanical response during forming operations.
Date:
January 1, 1977
Creator:
Dawson, P.R. & Thompson, E.G.
Object Type:
Article
System:
The UNT Digital Library
Rehabilitation Potential and Practices of Colorado Oil Shale Lands. Progress Report, June 1, 1976--May 31, 1977
Substantial progress has been made towards implementing all of the prescribed studies and satisfying the stated objectives since the Oil Shale Rehabilitation Project was actively initiated in June 1976. Concurrent with implementation, research objectives were substantively defined and supplemented without distracting or departing from the original purpose. Current studies are designed to fill voids in the present status of knowledge regarding lands disturbed by an impending oil shale industry in Colorado. The efforts of all contributing investigators have therefore been integrated and directed toward the goal of developing methodologies requisite for restoring diverse and complex ecosystems which will require only a minimal amount of maintenance or input of scarce resources. An intensive study site southeast of the Oil Shale Tract C-a has been obtained through a Cooperative Agreement with the Bureau of Land Management. Following this agreement, most subprojects were initiated at the intensive site. Additional programs will be implemented as spent shale becomes available this summer. Studies conducted principally in the laboratory and greenhouse, such as the microbiological and plant genetic studies, have achieved significant results.
Date:
February 1, 1977
Creator:
Sims, P. L.
Object Type:
Report
System:
The UNT Digital Library
Characterization of Fly Ash From Coal Combustion
Fly ash derived from coal combustion contains predominantly spherical particles which consist of an insoluble aluminosilicate glass containing several mineral impurities. An outer layer, 50 to 300 A thick, is rich in many potentially toxic trace elements in the form of simple and complex sulfates. This layer, which is soluble in water, contains essentially all of the particulate sulfur present in fly ash in the form of sulfate. The actual mechanism(s) of formation of particulate sulfate salts are ill-defined but probably involve adsorption of condensation of gaseous sulfur species onto fly ash surfaces within the power plant stack system.
Date:
January 1, 1978
Creator:
Natusch, D. F.S.
Object Type:
Article
System:
The UNT Digital Library
Solar Thermal Electric Power Systems With Line-Focus Collectors. Final Report
Electric power generation by conventional Rankine cycle heat engines with heat supplied by line-focus solar collectors was investigated. The objectives of the study were: (1) determine which of four types of line-focus solar collectors coupled with turbine-generators of conventional design has the potential to produce low-cost electric power with thermal energy in 100 to 300/sup 0/C range; (2) develop performance and cost relationships for organic Rankine cycle engines for power generation capacities from 3 MW/sub e/ to 300 MW/sub e/; (3) develop conceptual storage units for organic fluid systems. Evaluation procedures and study results and conclusion are presented and discussed in detail. (WHK)
Date:
December 1, 1978
Creator:
Duff, W. S.; Karaki, S.; Shaner, W. W.; Wilbur, P. J.; Somers, E. V.; Grimble, R. E. et al.
Object Type:
Report
System:
The UNT Digital Library
Comparative Performance of Two Types of Evacuated Tube Solar Collectors in a Residential Heating and Cooling System - The Progress Report
Two types of evacuated tube solar collectors have been operated in space heating, cooling and domestic hot water heating systems in Colorado State University Solar House I. An experimental collector from Corning Glass Works supplied heat to the system from January 1977 through February 1978, and an experimental collector from Philips Research Laboratory, Aachen, which is currently in use, has been operating since August 1978. A flat absorber plate inside a single-walled glass tube is used in the Corning design, whereas heat is conducted through a single glass wall to an external heat exchanger plate in the Philips collector. In comparison with conventional flat-plate collectors, both types show reduced heat losses and improved efficiency. For space heating and hot water supply in winter, the solar delivery efficiency of the Corning collector ranged from 49% to 60% of the incident solar energy. The portion of the space heating and domestic hot water load carried by solar energy through fall and winter ranged from 50% to 74%, with a four-month contribution of 61% of the total requirements. Data on the Philips collector are currently being analyzed.
Date:
January 1, 1979
Creator:
Conway, T. M.; Duff, W. S.; Loef, G. O. G. & Pratt, R. G.
Object Type:
Article
System:
The UNT Digital Library