Gold Mining in California - Plumas County
The Plumas-Eureka Gold Mine was a major producer of lode gold. At the La Porte district, in the southwest part of the county, in township 21N and range 9E, was the hydraulic mining center since the 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.