Resource Type

Oil-Shale Mining, Rifle, Colorado, 1944-56 (open access)

Oil-Shale Mining, Rifle, Colorado, 1944-56

From Introduction: "Detailed reports on various phases of the oil-shale mining research program have been published by the Bureau of Mines as Reports of Investigations, and numerous articles prepared by the mine staff have been published in the technical press. Summarizes of some of these publications are included in this report with other information not previously published."
Date: 1964
Creator: East, J. H., Jr. & Gardner, E. D.
System: The UNT Digital Library
Report on the Carpenter Ridge District, Dolores Plateau Area, Colorado (open access)

Report on the Carpenter Ridge District, Dolores Plateau Area, Colorado

A report on the survey of ore deposits in the Carpenter Ridge District, Dolores Plateau Area, Colorado.
Date: January 1946
Creator: Miller, Gardner B.
System: The UNT Digital Library
Report on the Carpenter Ridge District, Dolores Plateau Area, Colorado: [Figures and Calculations] (open access)

Report on the Carpenter Ridge District, Dolores Plateau Area, Colorado: [Figures and Calculations]

Index maps, detail figures, columnar sections, and calculation tables for the Carpenter Ridge District.
Date: April 12, 1988
Creator: Miller, Gardner B.
System: The UNT Digital Library
Mining Program: Bureau of Mines Oil-Shale Project, Rifle, Colorado (open access)

Mining Program: Bureau of Mines Oil-Shale Project, Rifle, Colorado

Report issued by the Bureau of Mines on the development of efficient mining methods for producing oil shale. Characteristics of the oil shale deposits of the Green River are presented. The results of core drilling and sampling in this area are also listed. This report includes tables, illustrations, maps, and photographs.
Date: April 1948
Creator: Gardner, E. D.
System: The UNT Digital Library
National Uranium Resource Evaluation: Durango Quadrangle, Colorado (open access)

National Uranium Resource Evaluation: Durango Quadrangle, Colorado

From purpose and study: The Durango Quadrangle, southwest Colorado (Fig. 1), was evaluated to identify geologic units and to delineate areas that exhibit characteristics favorable for uranium deposits. Geologic environments were evaluated to a depth of 1500 m based on recognition criteria (Mickle and Mathews, eds., 1978) prepared for the National Uranium Resource Evaluation (NURE) program. A favorable environment, as defined for this program, is an environment that could contain at least 100 tons U308 in deposits with an average grade no less than 100 ppm U308 . Environments that did not meet the NURE criteria were categorized as unfavorable. Some of the subsurface and several areas of restricted access were categorized as unevaluated because insufficient data exist for proper evaluation.
Date: June 1981
Creator: Theis, Nicholas J.; Madson, Michael E.; Rosenlund, Gene C.; Reinhart, William R. & Gardner, Hal A.
System: The UNT Digital Library
The Geology and Mineralogy of the W. Wilson Mine Near Clancey, Jefferson County, Montana (open access)

The Geology and Mineralogy of the W. Wilson Mine Near Clancey, Jefferson County, Montana

Report discussing the W. Wilson mine, which contained quartz, chalcedony, and silicified quartz monzonite. Pitchblende was deposited in the vein of the mine and subsequently oxidized and hydrated.
Date: March 1953
Creator: Meschter, D. Y.
System: The UNT Digital Library
Geology and Ore Deposits of the Freeland-Lamartine District, Clear Creek County, Colorado (open access)

Geology and Ore Deposits of the Freeland-Lamartine District, Clear Creek County, Colorado

Report discussing the results of a geological study of the Idaho Springs-Central City area of the Front Range mineral belt. The study was still in progress at the time of publication.
Date: March 1954
Creator: Harrison, J. E. & Wells, J. D.
System: The UNT Digital Library
Uranium-Mining Practices and Costs at Ten Salt Wash Lease Operations of Union Carbide Nuclear Co. (open access)

Uranium-Mining Practices and Costs at Ten Salt Wash Lease Operations of Union Carbide Nuclear Co.

Report issued by the U.S. Bureau of Mines discussing the mining costs and methods of uranium ores in Colorado. As stated in the introduction, "this report describes the relatively small-scale operations of the Salt Wash miner: the mining methods followed, the equipment used, and the production costs" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date: 1959
Creator: Dare, W. L.
System: The UNT Digital Library
The Eagle Valley Evaporite, Northwest Colorado--A Regional Synthesis (open access)

The Eagle Valley Evaporite, Northwest Colorado--A Regional Synthesis

The following report presents a regional study of the extent, thickness, lithology, stratigraphic relations, age, depositional environment, and tectonic history of thick sulfate deposits and associated salts of sodium and potassium.
Date: 1971
Creator: Mallory, William W.
System: The UNT Digital Library
National Uranium Resource Evaluation: Trinidad Quadrangle, Colorado (open access)

National Uranium Resource Evaluation: Trinidad Quadrangle, Colorado

From Introduction: "The Trinidad Quadrangle, Colorado, was evaluated to identify geologic units and to delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. All geologic environments were evaluated by means of surface investigations and subsurface data to a depth of 1500 m."
Date: June 1982
Creator: Johnson, V. C.; McCarn, D. W.; Kocis, D. E.; Walker, B. W. & Reinhart, W. R.
System: The UNT Digital Library
Geology of Carnotite-Bearing Sandstone in the Uravan and Gateway Districts, Montrose and Mesa Counties, Colorado, and Grand County, Utah (open access)

Geology of Carnotite-Bearing Sandstone in the Uravan and Gateway Districts, Montrose and Mesa Counties, Colorado, and Grand County, Utah

From Introduction: "In the Uravan and Gateway districts, the general character of the bedding in the ore-bearing sandstone and amount of alteration in associated mudstones, and the relation of these to each other, are the features most useful as large-scale guides. This report describes these features and their distribution, as well as some other significant geologic characteristics of the ore-bearing sandstone."
Date: January 1953
Creator: McKay, E. J.
System: The UNT Digital Library
Geology of carnotite-bearing sandstone in the Uravan and Gateway districts, Montrose and Mesa counties, Colorado, and Grand County, Utah (open access)

Geology of carnotite-bearing sandstone in the Uravan and Gateway districts, Montrose and Mesa counties, Colorado, and Grand County, Utah

This report describes the distribution of geologic features that may be used as geologic guides to carnotite deposits, sedimentary trends of the ore-bearing sandstone, and regional structures within and adjacent to the Urvan mineral belt in the Urvan and Gateway mining districts, Montrose and Mesa Counties, Colorado.
Date: February 3, 1953
Creator: McKay, E. J.
System: The UNT Digital Library
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples (open access)

Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples

From Introduction: "This volume contains the descriptions of the samples whose analyses are published in the preceding volume, Part I of this bulletin. The descriptions have been compiled from the notebooks of the persons who collected the samples, have been condensed from accounts given in published reports of the United States Geological Survey, or have furnished by the collection themselves. Inasmuch as the descriptions represent the work of many persons during a period of six years, and inasmuch as they were recorded under widely differing conditions, they necessarily vary in fullness detail."
Date: 1913
Creator: Lord, N. W.
System: The UNT Digital Library
Thorium and rare earth minerals in the Powderhorn district, Gunnison County, Colorado (open access)

Thorium and rare earth minerals in the Powderhorn district, Gunnison County, Colorado

"Thorium deposits were discovered in the Powderhorn district in 1949. This district has long been known for its occurrences of alkalic igneous rocks, of which the best known is the Iron Hill complex (Larsen, 1942). Some of these alkalic rocks contain titanium, barium, strontium, rare earths, thorium, and niobium in greater percentages than those of most igneous rocks. A study of the thorium deposits was undertaken to obtain more information on the geologic relation of minor elements, particularly rare earths, and thorium, to alkalic igneous rocks, and to evaluate the economic significance of the Thorium deposits."
Date: February 1954
Creator: Olson, J. C. & Wallace, S. R.
System: The UNT Digital Library
Geology and ore deposits of the Freeland-Lamartine district, Clear Creek County, Colorado (open access)

Geology and ore deposits of the Freeland-Lamartine district, Clear Creek County, Colorado

A report regarding a geological survey of the geology and ore deposits of the Freeland-Lamartine District, Clear Creek County, Colorado. Concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.
Date: March 1954
Creator: Harrison, Jack Edward & Wells, J. D.
System: The UNT Digital Library
Rock-Strata Gases of the Cripple Creek District, Colorado and Their Effect on Mining (open access)

Rock-Strata Gases of the Cripple Creek District, Colorado and Their Effect on Mining

From Introduction: "The presence in the Cripple Creek district, Colo., of irrespirable gas or gases, generally known to consist mainly of nitrogen and carbon dioxide, has been recognized by members of the mining industry in that region almost since underground mining was begun there; the occurrence origin, and possible control of these gases have been discussed in several articles cited at various places in this report. Similar gases have also been studied in other metal-mining districts, as later discussed."
Date: 1930
Creator: Denny, E. H.; Marshall, K. L.; Fieldner, A. C.; Emery, A. H.; Yant, W. P. & Selvig, W. A.
System: The UNT Digital Library
Some Innovations in Equipment For Scaling High Roofs and Mine Walls (open access)

Some Innovations in Equipment For Scaling High Roofs and Mine Walls

Report issued by the U.S. Bureau of Mines describing the methods and equipment developed at the oil-shale mine near Rifle, Colorado. This report includes photographs and illustrations documenting this equipment.
Date: October 1950
Creator: Brown, Brinton C.; Wright, Fred D. & Ballinger, Homer J.
System: The UNT Digital Library
A Review of the Physical and Engineering Properties of Raw and Retorted Oil Shales from the Green River Formation: Final Report (open access)

A Review of the Physical and Engineering Properties of Raw and Retorted Oil Shales from the Green River Formation: Final Report

"This report summarizes published geotechnical properties of raw and retorted oil shales from the Green River Formation. Basic physical properties including gradation, specific gravity and Atterberg limits and engineering properties including compaction, permeability, settlement, soundness, and strength are summarized and discussed. Where appropriate, conclusions are drawn about the suitability of retorted oil shales as a geotechnical construction material. Appendix A discusses three retorting processes used to extract oil from oil shale" (abstract, para. 2-3).
Date: March 1978
Creator: Snethen, Donald R.; Farrell, Warren J. & Townsend, Frank C.
System: The UNT Digital Library
Preliminary Analysis of Ore Distribution in the Gateway and Uravan Districts, Mesa and Montrose Counties, Colorado (open access)

Preliminary Analysis of Ore Distribution in the Gateway and Uravan Districts, Mesa and Montrose Counties, Colorado

From abstract: The distribution of the known uranium deposits of the Colorado Plateau is being analyzed in order 1) to test for systematic relationships between that pattern and geologic factors, 2) to help guide exploration, and 3) to appraise the potential resources of the region and of each of its component areas.
Date: April 1954
Creator: Strobell, J. D., Jr.; Sample, R. D.; Stephens, H. G. & Gilbert, Cynthia C.
System: The UNT Digital Library
Montroseite, a New Vanadium Oxide From the Colorado Plateaus (open access)

Montroseite, a New Vanadium Oxide From the Colorado Plateaus

A report describing the discovery of a new vanadium mineral found at several mines in Colorado and Utah, including a description of its physical and chemical properties, prevalence, and other relevant data.
Date: June 1953
Creator: Weeks, Alice D.; Cisney, Evelyn A. & Sherwood, Alexander M.
System: The UNT Digital Library
National Uranium Resource Evaluation: Pueblo Quadrangle, Colorado (open access)

National Uranium Resource Evaluation: Pueblo Quadrangle, Colorado

From Introduction: "The Front Range region from the Wyoming-Colorado state line to southern Colorado is a uranium metallogenic province. Correspondingly, uranium has been discovered in mineable deposits in metamorphic, igneous, and sedimentary rocks formed throughout the geologic history of the region both within the Front Range itself and in the apron of sedimentary rocks that surrounds the Front Range. The Pueblo 1ºx2º National Topographic Map Series (NTMS) quadrangle, Colorado (Fig. 1), which lies within this uranium metallogenic providence, was evaluated to identify and delineate areas and geologic units that exhibit characteristics favorable for the occurrence of uranium deposits."
Date: September 1982
Creator: Dickinson, Kendell A. & Hills, Francis Allan
System: The UNT Digital Library
Reconnaissance Investigations for Uranium in Black Shale Deposits of the Western States during 1951 and 1952 (open access)

Reconnaissance Investigations for Uranium in Black Shale Deposits of the Western States during 1951 and 1952

Report discussing investigations seeking uranium in deposits of black shale around the geographical areas of the Western States
Date: September 1953
Creator: Duncan, Donald Cave
System: The UNT Digital Library
Uranium Mining Methods and Costs at Several Mines on the Colorado Plateau (open access)

Uranium Mining Methods and Costs at Several Mines on the Colorado Plateau

Report issued by the U.S. Bureau of Mines discussing uranium mining costs and methods on the Colorado Plateau. Costs of labor, transportation, and explosives, as well as mining methods and practices used, are presented. This report includes maps, tables, illustrations, and photographs.
Date: 1961
Creator: Dare, Wilbert Leland
System: The UNT Digital Library
Engineering Report on Drilling in the Sand Wash Basin, Colorado (open access)

Engineering Report on Drilling in the Sand Wash Basin, Colorado

"This report consists of engineering details, statistics, individual borehole histories, and logistics for the 27 boreholes drilled in the project. Geophysical logs are included." (from Introduction)
Date: January 1980
Creator: Callihan, Michael C.
System: The UNT Digital Library