Tertiary Gold Bearing Channel Gravel California Mining
 

Tertiary Gold Bearing Channel Gravel California Mining

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Rare Publications on CD ROM... Tertiary Gold-Bearing Channel Gravel in Northern Nevada County, California... Geological Survey Circular 566 - 1968... Here is a great study done by the USGS on the Motherlode! Complete with Maps and Diagrams!... Contents Include:... Abstract... Geology of the Channel Gravel... Introduction... Previous work... Acknowledgments... General...

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