The Ruth Pierce Mine was located in Mariposa County, California. This small collection contains reports about the mine as
well as correspondence regarding a lease option.
The Ruth Pierce Mine, discovered in 1851, was located in Mariposa County, California, about four miles from the twon of Hornitos.
In May 1913 the mine was owned by the Hornitos Gold Mining Company. As of 1920, the mine was owned by the Ruth Pierce Mining
Company, a subsidiary of the Tennessee Mining Company.
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