01900nam 2200409Ka 450 991069731140332120080819100542.0(CKB)5470000002387822(OCoLC)244096598(EXLCZ)99547000000238782220080819d2008 ua 0engtxtrdacontentcrdamediacrrdacarrierMercury geochemistry of gold placer tailings, sediments, bedrock, and waters in the lower Clear Creek Area, Shasta County, California[electronic resource] report of investigations, 2001-2003 /by Roger P. Ashley and James J. RytubaReston, Va. :U.S. Dept. of the Interior, U.S. Geological Survey,2008.viii, 65 pages digital, PDF fileOpen-file report ;2008-1122Title from title screen (viewed on Aug. 18, 2008).Includes bibliographical references.Mercury geochemistry of gold placer tailings, sediments, bedrock, and waters in the lower Clear Creek Area, Shasta County, California MercuryEnvironmental aspectsCaliforniaShasta CountyPlacer miningEnvironmental aspectsCaliforniaShasta CountyGold mines and miningEnvironmental aspectsCaliforniaShasta CountyMercuryEnvironmental aspectsPlacer miningEnvironmental aspectsGold mines and miningEnvironmental aspectsAshley Roger P(Roger Parkmand),1940-1385013Rytuba James J1381101Geological Survey (U.S.)GPOGPOBOOK9910697311403321Mercury geochemistry of gold placer tailings, sediments, bedrock, and waters in the lower Clear Creek Area, Shasta County, California3524580UNINA