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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.
Year Published 1994
Report Number EPA-R-820245; EPA/530/R-95/011
Stock Number PB95-191243
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
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=2000EFKN.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB95-191243 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation [vi], 74 pages : illustrations ; 29 cm
Abstract
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.
Notes
Professional paper (M.S.)--University of Nevada, Reno, 1992. Includes bibliographical references (pages 64-74). "EPA 530/R-95/011." Microfiche.