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Long-term protection of uranium mill tailings

Description: US Environmental Protection Agency standards for the cleanup and disposal of inactive tailings sites require that control measures for disposal of tailings be designed to be effective for up to 1000 years if reasonably achievable, and, in any case, for 200 years at least. To control the escape of contaminants over such long periods, containment systems must be capable of adjusting to changing environmental conditions. Elements of a containment system include surface covers, biotic barriers, rad… more
Date: April 1, 1984
Creator: Beedlow, P. A. & Hartley, J. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Field testing of fugitive dust control techniques at a uranium mill tailings pile - 1982 Field Test, Gas Hills, Wyoming.

Description: A field test was conducted on a uranium tailings pile to evaluate the effectiveness of 15 chemical stabilizers for control of fugitive dust from uranium mill tailings. A tailings pile at the Federal American Partners (FAP) Uranium Mill, Gas Hills, Wyoming, was used for the field test. Preliminary laboratory tests using a wing tunnel were conducted to select the more promising stabilizers for field testing. Fourteen of the chemical stabilizers were applied with a field spray system pulled behind… more
Date: December 1, 1983
Creator: Elmore, M.R. & Hartley, J.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cost of radon-barrier systems for uranium mill tailings

Description: This report deals specifically with the cost of three types of radon barrier systems, earthen covers, asphalt emulsion covers, and multilayer covers, which could meet standards proposed by the Environmental Protection Agency to stabilize uranium mill tailings located primarily in the western US. In addition, the report includes a sensitivity analysis of various factors which significantly effect the overall cost of the three systems. These analyses were based on a generic disposal site. Four di… more
Date: August 1, 1982
Creator: Baker, E.G. & Hartley, J.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High-field penning-malmberg trap: confinement properties and use in positron accumulation

Description: This dissertation reports on the development of the 60 kG cryogenic positron trap at Lawrence Livermore National Laboratory, and compares the trap`s confinement properties with other nonneutral plasma devices. The device is designed for the accumulation of up to 2{times}10{sup 9} positrons from a linear-accelerator source. This positron plasma could then be used in Bhabha scattering experiments. Initial efforts at time-of-flight accumulation of positrons from the accelerator show rapid ({approx… more
Date: September 1, 1997
Creator: Hartley, J.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Idaho radionuclide exposure study: Literature review

Description: Phosphate ores contain elevated levels of natural radioactivity, some of which is released to the environment during processing or use of solid byproducts. The effect of radionuclides from Idaho phosphate processing operations on the local communities has been the subject of much research and study. The literature is reviewed in this report. Two primary radionuclide pathways to the environment have been studied in detail: (1) airborne release of volatile radionuclides, primarily /sup 210/Po, fr… more
Date: October 1, 1987
Creator: Baker, E.G.; Freeman, H.D. & Hartley, J.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Use of asphalt emulsion sealants in disposal of uranium mill tailings

Description: Studies of asphalt emulsion sealants conducted by the Pacific Northwest Laboratory have demonstrated that the sealants are effective in containing radon within uranium tailings. The laboratory and field studies have further demonstrated that radon exhalation from uranium tailings piles can be reduced by greater than 99% to near background levels. Field tests at the tailings pile in Grand Junction, Colorado confirmed that an 8-cm admix seal containing 22 wt % asphalt could be effectively applied… more
Date: July 1, 1981
Creator: Hartley, J.N.; Freeman, H.D. & Elmore, M.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Review of fugitive dust control for uranium mill tailings

Description: An immediate concern associated with the disposal of uranium mill tailings is that wind erosion of the tailings from an impoundment area will subsequently deposit tailings on surrounding areas. Pacific Northwest Laboratory (PNL), under contract to the U.S. Nuclear Regulatory Commission, is investigating the current technology for fugitive dust control. Different methods of fugitive dust control, including chemical, physical, and vegetative, have been used or tested on mill tailings piles. This … more
Date: January 1, 1983
Creator: Li, C.T.; Elmore, M.R. & Hartley, J.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Use of asphalt emulsion selants to contain radon and radium in uranium tailings

Description: A 6.4-mm thick Armak E-63 cationic asphalt emulsion-Vitro subsoil seal was capable of preventing permeation of RaCl/sub 2/ in 0.5 N HCl solution, radon, and nitrogen under 3.6 kg/cm/sup 2/ (50 psi) overpressure for a 17-day period. (DLC)
Date: January 1, 1977
Creator: Koehmstedt, P. L.; Hartley, J. N. & Davis, D. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Potential lithium requirements for fusion power plants

Description: A discussion of lithium requirements and supply suggests that the lithium usage anticipated by the developing fusion power industry may require lithium production well beyond current production growth rates. Present U.S. lithium resources appear sufficient, however, and it is expected that the costs of increasing lithium production would be within acceptable costs for fusion power plants. Careful planning will be required to manage possible problems in obtaining adequate lithium production capa… more
Date: January 1, 1977
Creator: Hartley, J. N.; Gore, B. F. & Young, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Preparing the Yucca Mountain Multimedia Presentation

Description: In July 2002, the U.S. Congress approved Yucca Mountain in Nevada for development as a geologic repository for spent nuclear fuel and high-level radioactive waste. This major milestone for the country's high-level radioactive waste disposal program comes after more than 20 years of scientific study and intense public interaction and outreach. The U.S. Department of Energy's (DOE) public involvement activities were driven by two federal regulations-the National Environmental Policy Act (NEPA) an… more
Date: November 14, 2002
Creator: Larkin, Y.; Hartley, J. & Scott, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Standardized Construction of Mine Ventilating Doors

Description: Report issued by the U.S. Bureau of Mines discussing the development and construction of ventilation doors in mine operations. The importance of functioning ventilating doors is presented. The construction process is described in detail. This report includes an illustration.
Date: April 1944
Creator: Hartley, J. C. & Moschetti, A. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Proceedings of the Chornobyl phytoremediation and biomass energy conversion workshop

Description: Many concepts, systems, technical approaches, technologies, ideas, agreements, and disagreements were vigorously discussed during the course of the 2-day workshop. The workshop was successful in generating intensive discussions on the merits of the proposed concept that includes removal of radionuclides by plants and trees (phytoremediation) to clean up soil in the Chornobyl Exclusion Zone (CEZ), use of the resultant biomass (plants and trees) to generate electrical power, and incorporation of … more
Date: June 1, 1998
Creator: Hartley, J. & Tokarevsky, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Asphalt emulsion sealing of uranium mill tailings. 1979 annual report

Description: Uranium mill tailings are a source of low-level radiation and radioactive materials that may be released into the environment. Stabilization or disposal of these tailings in a safe and environmentally sound way is necessary to minimize radon exhalation and other radioactive releases. One of the most promising concepts for stabilizing uranium tailings is being investigated at the Pacific Northwest Laboratory: the use of asphalt emulsion to contain radon and other potentially hazardous materials … more
Date: June 1, 1980
Creator: Hartley, J. N.; Koehmstedt, P. L.; Esterl, D. J. & Freeman, H. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Uranium mill tailings stabilization

Description: Uranium mill tailings pose a potential radiation health hazard to the public. Therefore, stabilization or disposal of these tailings in a safe and environmentally sound way is needed to minimize radon exhalation and other environmental hazards. One of the most promising concepts for stabilizing U tailings is the use of asphalt emulsion to contain radon and other hazardous materials within uranium tailings. This approach is being investigated at the Pacific Northwest Laboratory. Results of these… more
Date: February 1, 1980
Creator: Hartley, J. N.; Koehmstedt, P. L.; Esterl, D. J. & Freeman, H. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Materials availability for fusion power plant construction

Description: A preliminary assessment was made of the estimated total U.S. material usage with and without fusion power plants as well as the U.S. and foreign reserves and resources, and U.S. production capacity. The potential environmental impacts of fusion power plant material procurement were also reviewed including land alteration and resultant chemical releases. To provide a general measure for the impact of material procurement for fusion reactors, land requirements were estimated for mining and dispo… more
Date: September 1, 1976
Creator: Hartley, J. N.; Erickson, L. E.; Engel, R. L. & Foley, T. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Innovative technology demonstrations

Description: Currently, several innovative technologies are being demonstrated at Tinker Air Force Base (TAFB) to address specific problems associated with remediating two contaminated test sites at the base. Cone penetrometer testing (CPT) is a form of testing that can rapidly characterize a site. This technology was selected to evaluate its applicability in the tight clay soils and consolidated sandstone sediments found at TAFB. Directionally drilled horizontal wells have been successfully installed at th… more
Date: April 1, 1992
Creator: Anderson, D.B.; Hartley, J.N. & Luttrell, S.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Innovative technology demonstrations

Description: Currently, several innovative technologies are being demonstrated at Tinker Air Force Base (TAFB) to address specific problems associated with remediating two contaminated test sites at the base. Cone penetrometer testing (CPT) is a form of testing that can rapidly characterize a site. This technology was selected to evaluate its applicability in the tight clay soils and consolidated sandstone sediments found at TAFB. Directionally drilled horizontal wells have been successfully installed at th… more
Date: April 1, 1992
Creator: Anderson, D. B.; Hartley, J. N. & Luttrell, S. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Innovative technology demonstration

Description: The Innovative Technology Demonstration (ITD) program at Tinker Air Force Base (TAFB), Oklahoma City, Oklahoma, will demonstrate the overall utility and effectiveness of innovative technologies for site characterization, monitoring, and remediation of selected contaminated test sites. The current demonstration test sites include a CERCLA site on the NPL list, located under a building (Building 3001) that houses a large active industrial complex used for rebuilding military aircraft, and a site … more
Date: April 1, 1992
Creator: Anderson, D. B.; Luttrell, S. P.; Hartley, J. N. & Hinchee, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Methodology for Identifying Materials Constraints to Implementation of Solar Energy Technologies

Description: A materials assessment methodology for identifying specific critical material requirements that could hinder the implementation of solar energy has been developed and demonstrated. The methodology involves an initial screening process, followed by a more detailed materials assessment. The detailed assessment considers such materials concerns and constraints as: process and production constraints, reserve and resource limitations, lack of alternative supply sources, geopolitical problems, enviro… more
Date: July 1978
Creator: Litchfield, J. W.; Watts, R. L.; Gurwell, W. E.; Hartley, J. N. & Bloomster, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Innovative technology demonstrations

Description: Environmental Management Operations (EMO) is conducting an Innovative Technology Demonstration Program for Tinker Air Force Base (TAFB). Several innovative technologies are being demonstrated to address specific problems associated with remediating two contaminated test sites at the base. Cone penetrometer testing (CPT) is a form of testing that can rapidly characterize a site. This technology was selected to evaluate its applicability in the tight clay soils and consolidated sandstone sediment… more
Date: August 1, 1992
Creator: Anderson, D. B.; Luttrell, S. P.; Hartley, J. N. & Hinchee, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High energy beam lifetime analysis

Description: We have developed a positron lifetime defect analysis capability based on a 3 MeV electrostatic accelerator. The high energy beam lifetime spectrometer is operational with a 60 mCi {sup 22}Na source providing a current of 7 10{sup 5} positrons per second. Lifetime data are derived from a thin plastic transmission detector providing an implantation time and a BaF{sub 2} detector to determine the annihilation time. Positron lifetime analysis is performed with a 3 MeV positron beam on thick sample… more
Date: May 1, 1997
Creator: Howell, R. H.; Sterne, P. A.; Hartley, J. & Cowan, T. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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