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Colusa
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Mercury release from the Rathburn Mine, Petray Mine, and Bear Valley saline springs, Colusa County, California 2004-2006 [New Window]
Summary of data obtained from field sampling of mine tailings and waste rock and water and sediment in regional springs and tributaries that drain from the mine area into Bear Creek. Ground-water springs are also potential sources of mercury here.
PDF Major- and trace-element concentrations in soils from northern California: Results from the Geochemical Landscapes project pilot study [New Window]
Regional-scale geochemical survey designed to serve as a baseline for further analyses, and to understand effects of historical mining in the area.

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