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A Reconnaissance for Uranium in Carbonaceous Rocks in Southwestern Colorado and Parts of New Mexico (open access)

A Reconnaissance for Uranium in Carbonaceous Rocks in Southwestern Colorado and Parts of New Mexico

From abstract: Coal and carbonaceous shale of the Dakota formation of Cretaceous age were examined for radioactivity in the Colorado Plateau of southwestern Colorado and northwestern New Mexico during the summer of 1953.
Date: February 1955
Creator: Baltz, Elmer H., Jr.
Object Type: Report
System: The UNT Digital Library
Preliminary Appraisal of Diamond-Drill Exploration in the Legin Group Area, San Miguel County, Colorado (open access)

Preliminary Appraisal of Diamond-Drill Exploration in the Legin Group Area, San Miguel County, Colorado

From introduction: This preliminary report summarizes the results of the 1950 drilling in the Legin group area of San Miguel County, Colorado and gives a more complete, but preliminary, estimate of the uranium and vanadium ore reserves. When the radiometric and chemical assay data are completed, a detailed report will be transmitted.
Date: February 1951
Creator: Bell, Henry
Object Type: Report
System: The UNT Digital Library
Preliminary Report on Diamond-Drill Exploration of Parts of Blue and Moon Mesas, Mesa County, Colorado (open access)

Preliminary Report on Diamond-Drill Exploration of Parts of Blue and Moon Mesas, Mesa County, Colorado

From abstract and summary: The Blue and Moon Mesa areas are about 13 miles southeast of Gateway, Mesa County, Colo. Total production of carnotite ore from the Blue and Moon Mesa areas has been about 1,000 short tons that averaged about 0.25 percent U30Oand 1.75 percent V205. Most of this production was obtained from 1940 to 1943 and in 1949. The U. S. Geological Survey explored the northern parts of these areas by diamond drilling between August 9 and December 14, 1950. The Survey drilled 113 holes, totalling 16,039 feet. This drilling was mostly wide-spaced and was done to obtain geologic information.
Date: February 1951
Creator: Finch, Warren Irvin
Object Type: Report
System: The UNT Digital Library
[Letter from Thelma M. Taylor to John J. Herrera - 1965-02-18] (open access)

[Letter from Thelma M. Taylor to John J. Herrera - 1965-02-18]

Letter from Thelma M. Taylor to John J. Herrera, dated February 18, 1965, regarding an insurance policy.
Date: February 18, 1965
Creator: Taylor, Thelma M.
Object Type: Letter
System: The Portal to Texas History
[Certificate of representation from LULAC Council Number 113 for Fidel Martinez - February 13, 1953] (open access)

[Certificate of representation from LULAC Council Number 113 for Fidel Martinez - February 13, 1953]

Certificate of representation from LULAC Council Number 113 of Trinidad, Colorado for Fidel Martinez to represent the council at the LULAC Regional Convention held in Albuquerque, New Mexico on February 14-15, 1953.
Date: February 13, 1953
Creator: League of United Latin American Citizens
Object Type: Text
System: The Portal to Texas History
[Memorandum from Roberto Ornelas to LULAC Supreme Council members and all Council Presidents - 1977-02-08] (open access)

[Memorandum from Roberto Ornelas to LULAC Supreme Council members and all Council Presidents - 1977-02-08]

Memorandum from Roberto Ornelas, Chairman of the LULAC Foundation, dated February 8, 1977, and directed to Supreme Council members and all Council Presidents of League of United Latin American Citizens. The memo is regarding a $50,00 grant for the establishment of a LULAC office in Denver, Colorado and the search for a new Executive Director and Executive Secretary of that office.
Date: February 8, 1977
Creator: Ornelas, Roberto
Object Type: Letter
System: The Portal to Texas History
Baseline Risk Assessment of Ground Water Contamination at the Uranium Mill Tailings Site Near Durango, Colorado (open access)

Baseline Risk Assessment of Ground Water Contamination at the Uranium Mill Tailings Site Near Durango, Colorado

This risk assessment evaluates the possibility of health and environmental risks from contaminated ground water at the uranium mill tailings site near Durango, Colorado. The former uranium processing site`s contaminated soil and material were removed and placed at a disposal site located in Body Canyon, Colorado, during 1986--1991 by the US Departments of Energy`s Uranium Mill Tailings Remedial Action (UMTRA) Project. Currently, the UMTRA Project is evaluating the nature and extent of ground water contamination at the site. This risk assessment follows an approach similar to that used by the US Environmental Protection Agency. The first step is to determine what site-related contaminants are found in ground water samples. The next step in the risk assessment is to determine how much of these contaminants people might ingest if they got their drinking water from a well on the site. In accordance with standard practice for this type of risk assessment, the highest contaminant concentrations from the most contaminated wells are used. The risk assessment then explains the possible health problems that could result from this amount of contamination.
Date: February 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Role of polycrystallinity in CdTe and CuInSe{sub 2} photovoltaic cells. Annual subcontract report, 1 April 1992--31 March 1993 (open access)

Role of polycrystallinity in CdTe and CuInSe{sub 2} photovoltaic cells. Annual subcontract report, 1 April 1992--31 March 1993

This report describes work to conduct several investigations of thin-film polycrystalline solar cells. (1) An analysis of high-efficiency solar cells fabricated at the University of South Florida showed significant reduction in forward recombination current, and the cells were stable over a 3-month test period. (2) Transient voltage effects were documented in a large number of polycrystalline cells and were attributed to long-lived trapping states sensitive to voltage changes near one-half open-circuit voltage. (3) Collection efficiency and its voltage dependence were carefully calculated. The typical effect on photocurrent at operating voltages is about 2% for CuInSe{sub 2}, and less for other cells.
Date: February 1, 1994
Creator: Sites, J. R.
Object Type: Report
System: The UNT Digital Library
[News Script: Denver] (open access)

[News Script: Denver]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: February 27, 1970, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Workers exposed to gas] (open access)

[News Script: Workers exposed to gas]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: February 27, 1970, 6:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
Direct Methane Conversion to Methanol. Quarterly Project Status Report, October 1, 1992--December 31, 1992 (open access)

Direct Methane Conversion to Methanol. Quarterly Project Status Report, October 1, 1992--December 31, 1992

We proposed to demonstrate the effectiveness of a catalytic membrane reactor (a ceramic membrane combined with a catalyst) to selectively produce methanol by partial oxidation of methane. Methanol is used as a chemical feedstock, gasoline additive, and turbine fuel. Methane partial oxidation using a catalytic membrane reactor has been determined as one of the promising approaches for methanol synthesis from methane. In the original proposal, the membrane was used to be used to selectively remove methanol from the reaction zone before carbon oxides form, thus increasing the methanol yield. Methanol synthesis and separation in one step would also make methane more valuable for producing chemicals and fuels. The cooling tube inserted inside the membrane reactor has created a low temperature zone that rapidly quenches the product stream. This system has proved effective for increasing methanol selectivity during CH{sub 4} oxidation, and we are using and modifying this non-isothermal, non-permselective membrane reactor.
Date: February 12, 1992
Creator: Noble, R. D. & Falconer, J. L.
Object Type: Report
System: The UNT Digital Library
[News Script: Draft] (open access)

[News Script: Draft]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: 1970-02-12T24:00:00
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Protest] (open access)

[News Script: Protest]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: February 19, 1970, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
Reconnaissance for Radioactivity in the Gold Hill Mining Area, Boulder County, Colorado, Part 1 (open access)

Reconnaissance for Radioactivity in the Gold Hill Mining Area, Boulder County, Colorado, Part 1

Abstract: Several radioactive deposits were found as a result of reconnaissance in the Gold Hill mining area, Boulder County, Colo. The ore deposits of the area have been worked chiefly for gold. All ore shipped has come from fissure veins, most of which are gold telluride veins. There are, however, some important sulfide veins which show a vague zonal distribution of pyritic gold ores and silverlead ores. The results of this reconnaissance suggest a possible relationship of the radioactive deposits to this indistinct sulfide zoning; however, the zoning is so obscure that its practical application to prospecting for uranium is of doubtful value at the present time. Pitchblende, torbernite, metatorbernite, and schroeckingerite have been identified in specimens from the area; however, no uranium minerals have yet been identified from most of the radioactive deposits, and the uraniferous material present is probably in disseminated small particles. Although selected samples from several localities assay 0.10 percent uranium or more, the known deposits are small and probably are not of immediate economic importance
Date: February 1955
Creator: Campbell, R. H.
Object Type: Report
System: The UNT Digital Library
Tabulation or Ore Reserves and Past Production for the Uranium-Vanadium Region of Colorado, Utah, New Mexico, and Arizona (open access)

Tabulation or Ore Reserves and Past Production for the Uranium-Vanadium Region of Colorado, Utah, New Mexico, and Arizona

The tabulations on these pages include all of the known areas in Colorado, Utah, New Mexico, and Arizona having economically important uranium-vanadium deposits of the type which are generally referred to by the terms roscoe-lite and/or carnotite. Though similar deposits are known to exist in other areas they are to be viewed as being little more than mineralogical curiosities.
Date: February 16, 1948
Creator: Fetzer, Wallace G.
Object Type: Report
System: The UNT Digital Library
Uranium Hydrogeochemical and Stream Sediment Reconnaissance in the San Juan Mountains, Southwest Colorado (open access)

Uranium Hydrogeochemical and Stream Sediment Reconnaissance in the San Juan Mountains, Southwest Colorado

From 1995 sites in the San Juan Mountains area, 1706 water and 1982 sediment samples were collected during June-July 1976 and analyzed for uranium. The area includes the southern third of the Colorado mineral belt which has yielded rich ores of gold, silver, copper, lead, zinc, and molybdenum. The broadly domed mountains are capped by 2500 m of Tertiary volcanics, deeply eroded to expose a Precambrian crystalline core. Adjacent plateaus underlain by Mesozoic sedimentary rocks were included in the reconnaissance. Average value of uranium in water samples from mountains was less than 0.5 parts per billion, from plateaus was 1-2 parts per billion, from Mancos shale areas exceeded 2 parts per billion. Anomalous sediment samples, 40 ppm uranium, came from near Storm King Mountain and upper Vallecito Creek. Other anomalous areas, including the Lake City mining district, were well defined by 4-30 parts per million uranium in sediment and 3-30 parts per billion uranium in water. Anomalous areas not previously reported indicate favorable areas for future exploration.
Date: February 1977
Creator: Maxwell, James C.
Object Type: Report
System: The UNT Digital Library
Rehabilitation Potential and Practices of Colorado Oil Shale Lands. Progress Report, June 1, 1976--May 31, 1977 (open access)

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
Environmental Assessment of Remedial Action at the Naturita Uranium Processing Site Near Naturita, Colorado. Revision 3 (open access)

Environmental Assessment of Remedial Action at the Naturita Uranium Processing Site Near Naturita, Colorado. Revision 3

The proposed remedial action for the Naturita processing site is relocation of the contaminated materials and debris to the Dry Flats disposal site, 6 road miles (mi) [10 kilometers (km)] to the southeast. At the disposal site, the contaminated materials would be stabilized and covered with layers of earth and rock. The proposed disposal site is on land administered by the Bureau of Land Management (BLM) and used primarily for livestock grazing. The final disposal site would cover approximately 57 ac (23 ha), which would be permanently transferred from the BLM to the DOE and restricted from future uses. The remedial action activities would be conducted by the DOE`s Uranium Mill Tailings Remedial Action (UMTRA) Project. The proposed remedial action would result in the loss of approximately 162 ac (66 ha) of soils at the processing and disposal sites; however, 133 ac (55 ha) of these soils at and adjacent to the processing site are contaminated and cannot be used for other purposes. If supplemental standards are approved by the NRC and state of Colorado, approximately 112 ac (45 ha) of contaminated soils adjacent to the processing site would not be cleaned up. This area is steeply sloped. The cleanup …
Date: February 1, 1994
Creator: unknown
Object Type: Report
System: The UNT Digital Library
[Letter from George Andre to Isaac Herbert Kempner, February 9, 1954] (open access)

[Letter from George Andre to Isaac Herbert Kempner, February 9, 1954]

Letter from George Andre to Isaac Herbert Kempner discussing ad valorem taxes on sugar stocks.
Date: February 9, 1954
Creator: Andre, George L.
Object Type: Letter
System: The Portal to Texas History
[Letter from W. H. Louviere to Frank A. Kemp, February 26, 1953] (open access)

[Letter from W. H. Louviere to Frank A. Kemp, February 26, 1953]

Letter from W. H. Louviere to Frank A. Kemp discussing I. H. Kempner's recent chest operation and recovery.
Date: February 26, 1953
Creator: Louviere, William H.
Object Type: Letter
System: The Portal to Texas History
[Letter from Duane C. Rutherford to Blanche Perry] (open access)

[Letter from Duane C. Rutherford to Blanche Perry]

A typewritten and signed letter from Eastside Church of Christ elder Duane C. Rutherford to Blanche Perry confirming arrangements for Perry to paint the baptistry scene. A short handwritten note is visible on the back that says: "Buren or Luis - Give to Sis Shick or put in her mail box - please, Sis Perry."
Date: February 12, 1966
Creator: Rutherford, Duane C.
Object Type: Text
System: The Portal to Texas History
[Distribution of Funds from Hattie M. Sayles and Henry Sayles, February 2, 1915] (open access)

[Distribution of Funds from Hattie M. Sayles and Henry Sayles, February 2, 1915]

Document in which Henry Sayles and Hattie M. Sayles distribute an amount of $7866.97 amidst their children and relatives, declaring Henry Sayles Jr. to be in charge of the funds.
Date: February 2, 1915
Creator: Sayles, Henry & Sayles, Harriet McAlpine (Hattie)
Object Type: Legal Document
System: The Portal to Texas History
[News Script: Colorado death ruled a suicide] (open access)

[News Script: Colorado death ruled a suicide]

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: February 20, 1969, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Sports] (open access)

[News Script: Sports]

Photocopy of a script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: 1969-02-28T24:00:00
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library