Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"Uranium Mining"”.
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Design and implementation of an automated gamma probe for jet boring uranium mining.
… System (JBS) pilot holes at the Cigar Lake uranium mine is presented. Variant design is used to design, develop, test and implement the detector's hardware, fi rmware and software. The battery powered detector is attached inside a JBS drill rod to collect radiometric data through the …
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Water Resources Impacts of Uranium Mining in the San Juan Basin, New Mexico
… understanding of the groundwater impacts of uranium mining in the San Juan Basin by estimating the volumetric amount of water removed from the underlying Westwater Canyon member aquifer. This was achieved by modeling a conceptual mine that is based on the physical characteristics present near …
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Cost-Benefit Analysis as Democratic Ritual: The Controversy Over a Proposed Uranium Mining and Milling Project in Virginia (1981-2013)
… analysis (CBA) through an illustrative case on a uranium mining controversy in the US state of Virginia. Arguably, traditional STS scholarship has primarily served what we might call an unmasking function by working to expose political, cultural, gender, corporate, and other factors that get …
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Relationships between water quality, species composition, biodiversity and ecosystem function in lakes and flooded pits exposed to uranium mining activities in Northern Saskatechewan
Uranium mining activities have the potential to impact aquatic systems through mine drainage (runoff) and the release of treated effluent into nearby watersheds. Such anthropogenic exposure can lead to elevated concentrations of metals and major ions, which may impact aquatic biota. Previous …
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Split Rock Sky
… Baptist—a cowboy and prospector—and the rise of uranium mining on the Western Slope of Colorado during the late 1800’s.
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Split Rock Sky
… Baptist—a cowboy and prospector—and the rise of uranium mining on the Western Slope of Colorado during the late 1800’s.
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Life Cycle Analysis of Greenhouse Gas Emissions from the Mining and Milling of Uranium in Saskatchewan
… gas (GHG) emissions intensity during the uranium mining-milling phase of the nuclear fuel cycle for three paired uranium mine-mill operations in northern Saskatchewan (SK). The study period runs from 2006 – 2013 for two of the three pairs, and from 1995-2010 for the third. The life cycle …
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Radium cycling in groundwater : implications for bioremediation and tracer studies
… element and forms naturally from the decay of uranium (U) and thorium (Th), elements that are ubiquitous within most rocks, soils and sediments. Radium contamination associated with anthropogenic activities such as hydraulic fracturing, uranium mining, and nuclear waste disposal poses …
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Use of Chemical and Isotopic Signatures to Distinguish Between Uranium Mill-Related and Naturally Occurring Groundwater Constituents at the Bluewater Disposal Site
Uranium mining and milling in the Grants Mining District (GMD) in northwestern New Mexico resulted in environmental impacts on the areas soil, stream sediments, surface water and groundwater. The Bluewater mill, a predominant mill within the GMD, disposed of tailings in unlined tailings piles …
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Multiattribute utility functions for the deep borehole filter restoration problem
… of low carbon energy sources are required. Uranium is a good energy source, because it has high energy density and nuclear power does not contribute to carbon dioxide emissions. However, difficulties in uranium mining cause large worldwide shortages of uranium for power generation. Decision …
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Development of an end-effector system for autonomous spraying applications and radiation surveying
… and radiation surveying in underground uranium mining environments. The prototype end-effector system presented consists of two functionally distinct prototype tools that achieve the independent tasks of autonomous shotcrete spray pattern control and surface radiation surveying. The work …
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Heavy Metals in Traditionally Used Fruits Among the Lakota
… particularly because of current and past uranium mining nearby, as well as familiarity with occasional selenium poisoning in livestock. In this study, concentrations of As, Ba, Pb, Se, and U were determined using ICP-OES for selected traditionally edible berries and small fruits, and the …
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Rocket states - an analysis of US missile culture
… focuses on the state of Colorado and uranium mining, and examines the missile’s substance, its nuclear core, through close readings of Stephen King’s The Shining. The second chapter, ‘Preservation’, is concerned with the state of Kansas and the missile silo, and employs the writings of …
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Selenium bioaccumulation and speciation in the benthic invertebrate Chironomus dilutus: an assessment of exposure pathways and bioavailability
Uranium mining and milling operations at Key Lake, Saskatchewan, Canada, have been releasing effluent since 1983, resulting in the accumulation of selenium in surface water, sediment, and biota in downstream lakes relative to pre-development and reference lake conditions. Elevated selenium can pose …
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Britain's exploitation of Occupied Germany for scientific and technical intelligence on the Soviet Union
… it allowed research and development projects and uranium.-mining operations there to be penetrated. Intelligence of Soviet weapons development and of the quality of Soviet military technology was obtained. The mass interrogation of prisoners-of-war returned by the Soviets to the British Occupation …
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Long-term desorption behavior of uranium and neptunium in heterogeneous volcanic tuff materials
Uranium and neptunium desorption were studied in long-term laboratory experiments using four well-characterized volcanic tuff cores collected from southeast of Yucca Mountain, Nevada. The objectives of the experiments were to 1. Demonstrate a methodology aimed at characterizing …
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The Chemical-Induced Genotoxicity of Depleted Uranium
Uranium has been mined for many years and used for fuel for nuclear reactors and materials for atomic weapons, ammunition, and armor. While the radioactivity associated with uranium mining has been linked to the development of lung and kidney cancers, and leukemia, little is known about the direct …
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Evaluation of approaches for the derivation of defensible sediment quality guidelines for application at Saskatchewan uranium operations
… SQGs derived specifically for use by the uranium industry in Canada, propose alternative SQVs for use at uranium operations in northern Saskatchewan using a novel approach, and investigate the potentially bioavailable fractions of metals in sediment which could become an alternative …
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Investigating the cause(s) of benthic macroinvertebrate community impairment downstream of two Saskatchewan uranium operations
… downstream of both the Key Lake and Rabbit Lake uranium operations in northern Saskatchewan, Canada. The objective of this research was to try to identify the cause(s) of these impacts using a weight-of-evidence approach. Given that sediments generally accumulate contaminants that are related to …
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REPRODUCTION IN FATHEAD MINNOWS (PIMEPHALES PROMELAS) FOLLOWING WATER OR SEDIMENT EXPOSURE TO A COMPLEX URANIUM MILLING EFFLUENT ELEVATED IN SELENIUM
Northern Saskatchewan, Canada is home to a uranium milling operation that discharges a complex effluent containing elevated concentrations of nutrients, compounds and many metals including the metalloid selenium (Se). Selenium has the potential to bioaccumulate in aquatic systems even when water …
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