The California State Mining Bureau was created in 1880 following decades of explosive demographic and economic growth in the wake of the Gold Rush. Henry G. Hanks served as the first California State Mineralogist responsible for compiling data and maps and building a collection to represent the state’s mineral resources and long mining heritage.
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- California
Geological Map of the State of California Issued by State Mining Bureau…1916.
- An extraordinary resource for anyone interested in the geology of California.
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