02372oam 2200613 450 991071385110332120200902084908.0(CKB)5470000002505183(OCoLC)963254211(OCoLC)995470000002505183(EXLCZ)99547000000250518320161118d1983 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierPotential effects of surface coal mining on the hydrology of the Greenleaf-Miller area, Ashland coal field, southeastern Montana /by Gary W. LevingsHelena, Montana :U.S. Geological Survey,1983.1 online resource (iv, 31 pages) illustrations, mapsWater-resources investigations report ;82-4101"February 1983.""Prepared in cooperation with the U.S. Bureau of Land Management."Includes bibliographical references (pages 21-23).Water qualityMontanaAcid mine drainageEnvironmental aspectsMontanaCoal mines and miningEnvironmental aspectsMontanaStrip miningEnvironmental aspectsMontanaAcid mine drainageEnvironmental aspectsfastCoal mines and miningEnvironmental aspectsfastStrip miningEnvironmental aspectsfastWater qualityfastWater qualityAcid mine drainageEnvironmental aspectsCoal mines and miningEnvironmental aspectsStrip miningEnvironmental aspectsAcid mine drainageEnvironmental aspects.Coal mines and miningEnvironmental aspects.Strip miningEnvironmental aspects.Water quality.Levings Gary W.1400470Geological Survey (U.S.),United States.Bureau of Land Management.COPCOPOCLCOOCLCAOCLCFUNDGPOBOOK9910713851103321Potential effects of surface coal mining on the hydrology of the Greenleaf-Miller area, Ashland coal field, southeastern Montana3499382UNINA