The Black Oak Mine, located about one mile southwest of Soulsbyville, California, was primarily a gold producer. Discovered in 1878, it was worked intermittently until the 1920s. The mine was ultimately developed to the 19th level, reaching a depth of 1,700 feet along its incline shaft, and was credited with more than $3.5 million in production.
A site visitor shared a collection of photographs from the Black Oak Mine that had belonged to his grandfather, Roger C. Knox, who served as superintendent of the mine for fifteen years. Roger’s brother, Charles Knox, was one of the mine’s owners.
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I've prowled around the mine and mill site several times back in the 1980s before it was surrounded by homes and ranchettes. It's located about 5-6 miles east of Sonora south of Hwy 108, maybe an hour from my shack outside of Riverbank City of Action. There's not much left, it's more of a "Here once stood..." site than anything else.
I don't remember much about the place or even how I found it - I don't know if somebody told me about it, I read about it or if I stumbled upon it one winter day when I was wandering around the Mother Lode drinking beer and smoking dope looking for mining sites. It was likely the latter - I did a lot of that back then.