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Watershed restoration limitations at the abandoned reclaimed Alta mine, Jefferson County, MT: Author: Labbe, Richard James; Date: 2008-05-15; Program: Land Rehabilitation; Abstract: Abandoned hardrock metal mines can have an antagonistic effect on soil productivity, vegetation, and water quality. Specifically, abandoned mines that actively generate acidity in soil are phytotoxic due to low pH and increased bioavailability of heavy metals. Arsenic concentrations in mine soils are often elevated, but may not be as mobile as heavy metals at low pH. Acid mine drainage migration from abandoned mines is problematic because it leads to water quality impairments that limit water use for certain activities (i.e. stock watering and irrigation). In this work, a previously reclaimed ...; Download File | View full details