San Juan Ridge
"The Ridge" was notable for hydraulic mining during the California gold rush, the largest operation of its kind being run by North Bloomfield Mining and Gravel Company. French Corral was the first mining camp on The Ridge. In the 1990s, research was conducted to renew gold mining efforts.
- Pogash, Carol (22 August 2014). "Efforts to Revive Rich California Mine Hit Strong Resistance". New York Times. Retrieved 23 August 2014.
- Durham, David L. (1998). California's geographic names : a gazetteer of historic and modern names of the state. Clovis, Calif.: Word Dancer Press. p. 551. ISBN 1-884995-14-4.
- "San Juan Ridge Gold Mine Begins Production". onemine.org. 1996-01-01. Retrieved 2008-08-01.
- Hoover, M.B.; Kyle, D.E. (2002). Historic spots in California. Stanford, Calif.: Stanford University Press. p. 260. ISBN 0-8047-4482-3.
- "North San Juan and French Corral". sierranevadavirtualmuseum.com. Retrieved 2008-08-01.
- Moore, Paul (2008-02-26). "Other Voices: Grass Valley should heed San Juan Ridge mining lessons". The Union. Retrieved 2008-08-01.
- "PLACES TO VISIT NEAR DOUBLE OAK". doubleoakwinery.com. Retrieved 2008-08-01.
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