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Kinetics and Community Profiling of Sulfate-Reducing Bacteria in Organic Carbon Treated Mine Tailings: Author: McBroom, Mark David; Date: 2005-05-15; Program: Environmental Engineering; Abstract: Acid rock drainage (ARD) poses a significant health and environmental hazard worldwide via the discharge of highly acidic waters and potentially toxic levels of mobile metals. This is a result of weathering and microbial oxidation of pyretic minerals present in mine tailings. Sulfate reducing bacteria (SRB), which are often indigenous to mine tailings, have demonstrated promising potential in metabolically raising effluent pH and immobilizing metals through precipitation and biomineralization. The addition of an organic carbon source has the potential of stimulating the SRB and reducing ARD at...; Download File | View full details

Characterization of Riparian Wetland Soils and Associated Metal Concentrations at the Headwaters of the Stillwater River, Montana: Author: Cook, Steven Allen; Date: 2007-05-15; Program: Land Resources and Environmental Sciences; Abstract: I investigated the spatial and vertical distribution of metals in an alpine riparian wetland downstream of acid rock drainage in the New World Mining District, Cooke City, Montana. The McLaren ore deposit was discovered on Fisher Mountain in 1933, and underground and open-cut mining occurred until 1953. Fisher Mountain is the primary source of acid rock drainage in this part of the New World Mining District. Both natural and mining related processes released acidity and metals (particularly copper, lead, and zinc) into Daisy Creek and the upper Stillwater River in the form of dissolved metals ...; Download File | View full details