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R. C Eisenhauer was a mining engineer of San Francisco. Mining report by Eisenhauer details the mining history of the St. Joe Consolidated Mines Corporation property, values of ore removed, geology of the property, results of sampling, evaluation of ore reserves, and conclusions about expectations for profitable mining. Also included are schematic drawings of the workings. Material from October 30, 1936.
- Subject: Gold mines and mining -- Nevada -- Silver City X