Record Display for the EPA National Library Catalog
RECORD NUMBER: 642 OF 646
|OLS Field Name||OLS Field Data|
|Main Title||Water quality in open pit precious metal mines [microfiche] /|
|Author||MacDonald, Margaret Saunders. ; Macdonald, M. S. ; Miller, G. C. ; Lyons, W. B.|
|CORP Author||Nevada Univ., Reno.;Environmental Protection Agency, Washington, DC.|
|Report Number||EPA-R-820245; EPA/530/R-95/011|
|Subjects||Precious metals. ; Mines and mineral resources.|
|Additional Subjects||Open pit mining ; Water quality ; Lakes ; Precious metals ; Ground water ; Acidity ; Concentration(Composition) ; Inorganic phosphates ; Uranium ; Coal ; Copper ; Silver ; Gold ; Reclamation ; Biological effects ; pH ; Geochemistry ; Arsenic|
|Collation||[vi], 74 pages : illustrations ; 29 cm|
Open pit mining below the water table results in pit lakes. This study documents the current level of understanding of issues concerning pit water quality and determines where additional research is needed. The report discusses factors contributing to pit water quality: groundwater flow, water-wall rock reactions (flow in structures and sloughing of wallrocks), acid versus alkaline pit water (the acid forming process, neutralization, evaluation, of potential for acid production, and mitigation of acid mine drainage), trace elements, arsenic speciation, evapconcentration, and hydrothermal activity.
Professional paper (M.S.)--University of Nevada, Reno, 1992. Includes bibliographical references (pages 64-74). "EPA 530/R-95/011." Microfiche.