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Thursday, July 23, 2020 | History

2 edition of Investigation of contamination of earthen covers on inactive uranium mill tailings found in the catalog.

Investigation of contamination of earthen covers on inactive uranium mill tailings

Gergely Markos

Investigation of contamination of earthen covers on inactive uranium mill tailings

by Gergely Markos

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  • 36 Currently reading

Published by Geochemistry and Environmental Chemistry Research in Rapid City, SD .
Written in English

    Subjects:
  • Uranium mill tailings.

  • About the Edition

    Report examines the contamination of earth covers by uranium mill tailings. The researchers studied the Riverton tailings pile for the report, from which they attempted to determine: the distribution and concentration of salt, trace elements and radionuclies through the cover and into the tailings; the concentration of salts and other contaminants in the earthen cover from chemical migration; the relationship between the migration of major elements and trace elements; a possible model of the mechanism that promotes and slows this migration; and the chemical and physical properties of the cover which influence the migration.

    Edition Notes

    Statementprepared by G. Markos and K.J. Bush
    SeriesBoojum Research reports -- R0212.
    ContributionsBush, Kathryn J., Geochemistry and Environmental Chemistry Research.
    The Physical Object
    Paginationvii, 96 p.
    Number of Pages96
    ID Numbers
    Open LibraryOL22238847M

    Remediation of uranium production facilities encompasses activities to restore areas including mines, mills, waste management facilities, tailings containment, and land and water resources. At the outset of a remediation programme, the final land use for the site is agreed with the stakeholders. of radon emissions from uranium tailings piles during the operational period of a uranium mill. On April 6, , standards for NRC licensees were proposed under the Clean Air Act (48 FR , April 6, ); however, uranium fuel-cycle facilities, which included operating uranium mills, were excluded because these sources are subject to EPA1s.

    approximately persons, and the adjacent Kerr-McGee uranium mine employs around The UNC mill normally processes 3, tons per day of uranium ore, deposit"* ins the acidified tailings slurry in a series of 3 holding ponds, each of earthen construction. . Sohio L-Bar uranium mill tailings site, Cibola County, New Mexico NRC Docket No. (SOHIO WESTERN MINING CO., SALT LAKE CITY, UT) NRC Material License No. SUA > U.S. DOE Office of Legacy Management: L-Bar site. Aerial view: Google Maps MSRMaps Erosion found at Sohio L-Bar uranium mill tailings site.

    The Uranium Mill Tailings Radiation Control Act (Act) of is a U.S. federal law that aims to provide for the disposal, long-term stabilization, and control of uranium mill tailings in a safe and environmentally sound manner and to minimize or eliminate radiation health hazards to the public. Determine the radon flux through a multi-layer soil cover of an uranium mill tailings pile and/or optimize the cover for a given flux. (For calculating radon flux from bare and/or water covered tailings, see the Uranium Mill Tailings Radon Flux Calculator) Select activity unit first, then enter the parameters and click the "Calculate" button below.


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Investigation of contamination of earthen covers on inactive uranium mill tailings by Gergely Markos Download PDF EPUB FB2

The Uranium Mill Tailings Remedial Action Project elected to determine the significance of migration of salts and contaminants into earthen covers emplaced on tailings by funding this investigation of the migration which has occurred through an earthen cover since the time of emplacement on an inactive uranium mill tailings pile.

Worldwide, the mining of uranium has generated × m3 of mill tailings. The radioactivity of these tailings depends on the grade of ore mined and varies from less than 1 Bq/g to more than Author: Abdesselam Abdelouas.

Uranium mining is the process of extraction of uranium ore from the ground. The worldwide production of uranium in amounted to 60, tonnes. Kazakhstan, Canada, and Australia are the top three producers and together account for 70% of world uranium production.

Other important uranium producing countries in excess of 1, tons per year are Niger, Russia, Namibia, Uzbekistan, China, the. Mill tailings are the fine-grained, sandy waste byproduct material that remains after the milling process has extracted and concentrated the uranium from the ore.

Mill tailings are typically created in slurry form during processing, and are then deposited in an impoundment or "mill tailings pile," which must be carefully regulated, monitored. associated with the ore.

Uranium mill tailings, for almost exclusively in Western States, were produced at approximately 50 sites around the USA. Of those, 24 tailings sites are covered in DOE’s UMTRAP program.

Uranium mill tailings have been undergoing a federally required clean-up program since. environmental contamination from uranium production facilities and their remediation proceedings of an international workshop on environmental contamination from uranium production facilities and their remediation organized by the international atomic energy agency and held in lisbon, 11–13 february international atomic energy agency.

THE LONG TERM STABILIZATION OF URANIUM MILL TAILINGS IAEA, VIENNA, IAEA-TECDOC ISBN 92–0––X mixed contamination by hazardous and radioactive substance and of uranium mining and The aim of the CRP on the long term stabilization of uranium mill tailings was to contribute to the.

CLEANING UP INACTIVE URANIUM MILL TAILINGS SITES Mr. Chairman and Members of the Subcommittee: We appreciate the opportunity to be here today to discuss the need for, and adequacy of, the Department of Energy's urj-posed "Residual Radioactive Materials Act of " (H.R.

BACKGPOUND Uranium mills are an often overlooked, but vital part of. 15 million cubic yards of uranium tailings were removed to controlled disposal sites from the nine uranium mill sites and approximately 5, other contaminated properties.

The disposal cells were constructed using strict groundwater, geologic and erosion criteria and are designed to encapsulate the material, reduce radon emanation and prevent.

Company records admit to severe groundwater contamination at Colorado's Uravan mill.[36] One tailings dam near Wyoming's Sweetwater River failed six times between and and was reporting a daily seepage rate of million gallons.[37].

The effect of this action was to remove the uranium mill tailings from any control at all. With the support of the U.S. Public Health Service, the State of Colorado formally protested, but it did.

The Uranium Mill Tailings Radiation Control Act (UMTRCA) of (Public Law ) is a federal law that provides for the safe and environmentally sound disposal, long-term stabilization, and control of uranium mill tailings in a manner that minimizes or eliminates radiation health hazards to the Size: KB.

Uranium mill tailings can adversely affect public health. There are four principal ways (or exposure pathways) that the public can be exposed to the hazards from this waste. The first is the diffusion of radon gas directly into indoor air if tailings are misused as a.

Uranium Mill Tailings Uranium mill tailings are primarily the sandy process waste material from a conventional uranium ore residue contains the radioactive decay products from the uranium chains (mainly the U chain) and heavy metals.

As defined in Ti P of the Code of Federal Regulations (10 CFR Part 40), the tailings or wastes produced by the extraction or. Uranium mill tailings are also often associated with elevated concentrations of highly toxic heavy metals, which are a major source of surface and groundwater contamination.

Success Stories - Siting Renewable Energy on Contaminated Land New Rifle Uranium Mill Tailings Radiation Control Act (UMTRCA) Title I Site, Colorado Solar to Power the Rifle Regional Wastewater Reclamation Facility at Former Uranium Processing Site Site Description The New Rifle Uranium Mill Tailings Radiation Control Act (UMTRCA) Title I site is located approximately two miles southwest of.

the tailings. The Uranium Mill Tailings Radiation Control Act of (Mill Tail-ings Act) was designed to remedy this situation, providing federal funds to clean up abandoned tailings piles and a stronger regulatory program to en-sure that uranium milling operations and.

This program facilitated the cleanup of 15 million cubic yards of uranium tailings at former uranium mill sites in nine western Colorado communities. Because much of the cleanup is complete, the focus has shifted to primarily "Post-UMTRA issues," or the discovery of new uranium mill tailings material by private citizens, utility companies or local governments.

This baseline risk assessment of ground water contamination at the uranium mill tailings site near Falls City, Texas, evaluates potential impact to public health and the environment resulting from ground water contamination at the former Susquehanna Western, Inc.

(SWI), uranium mill processing site. This document fulfills the following objectives. Uranium tailings are a waste byproduct of uranium mining, raw uranium ore is brought to the surface and crushed into a fine sand.

The valuable uranium-bearing minerals are then removed via heap leaching with the use of acids or bases, and the remaining radioactive sludge, called "uranium tailings", is stored in huge impoundments.

A short ton ( kg) of ore yield one to five pounds. The mill processed about million tons of ore and uranium-laced slimes and slurries through milling and leaching before the mill closed.

Left behind: million tons of tailings spread over tion (UNO Church Rock uranium mill/ the dam for the south tailings pond failed (Figure ), The pond held liquid and solid mill waste. Approximately 94 million gallons of mill waste fluids and tons of tailings solids were released.

This was the largest single release of liquid radioactive waste recorded m the United States and the fifth.Potential Radiological Impact of Airborne Releases and Direct Gamma Radiation to Individuals Living Near Inactive Uranium Mill Tailings Piles Abstract As part of a program to determine which measures to use to control radioactivity from tailings piles at inactive uranium mills, the U.S.

Environmental Protection Agency has prepared estimates of the potential for exposure to radioactivity.