By Tom Ashworth — PLUMAS COUNTY, CALIFORNIA County

Source: Tom Ashworth's Prospectors Cache (tomashworth.com / Tom Ashworth). Author: Tom Ashworth. Original page: plumas_ca.shtml. Area: by Tom Ashworth. Map coordinates are an approximate county/area centroid — not a precise claim site. LOCATION COUNTY: Plumas County STATE: California Of the approximately 4,582,000 ounces of gold produced in Plumas County, 1855-1959, more than half came from Tertiary gravel placer mines worked on a large scale by hydraulic methods. The Gopher Hill, Nelson Point, Sawpit Flat, and Upper Spanish Creek mines, were all in alluvial gravels for there placer gold content. The Engles and Superior mines, primarily copper with a by product of gold. In the Crescent Mills district, in township 26N. range 9E, there was total production through 1959 of 3,255 ounces of placer gold and 32,069 ounces of lode gold. In area streams, in Quaternary gravels you will find placer gold. At the Green Mountain Mine they produced of 100,000 ounces of lode gold by 1890. In the Johnsville district, in the southcentral part of county, in east l/2 of township 22N. range 11E, they had a total production, 393,000 gold ounces. All regional stream and bench gravels contain placer gold. The Plumas-Eureka Mine, was a major producer of lode gold. At the La Porte district, in southwest part of the county, in township 21N and range 9E, was the hydraulic mining center since 1850s, with total production, 1855-1959, of 2,910,000 gold ounces. At Mumfords Mill the area copper mines had a by product of gold. At Spring Garden go northeast 9 mile and you will find the Walker Mine, primarily copper mine with a by product of gold.