This section offers access to part of our catalog of historical mineral commodity production records. The records provide detailed annual production data by county. We scanned these records to PDF from original typed and handwritten paper documents created by the California Division of Mines and Geology during the middle of the 20th century. These data are visualized as a map and graphs in our California Historical Mineral Production interactive data dashboard (below). To download the scanned records, proceed to the next section, "Downloading the scanned records."
We've bundled the scanned records into .zip file packages, and grouped them two ways to accommodate different needs:
By Year, All Commodities: 12 packages. Package sizes range from 359 megabytes to 818 megabytes.
By Commodity, All Years: 66 packages. Package sizes range from 1 megabyte to 852 megabytes.