TY - RPRT TI - Mercury geochemistry of gold placer tailings, sediments, bedrock, and waters in the lower Clear Creek area, Shasta County, California— Report of investigations, 2001-2003 AU - Roger P. Ashley AU - James J. Rytuba PY - 2008 DO - 10.3133/ofr20081122 UR - https://pubs.usgs.gov/publication/ofr20081122 ID - ofr20081122 ER -