Report issued by the Bureau of Mines over gold-bearing deposits of Nevada County, California. Drilling and sampling of these gold deposits are discussed. This report includes tables, maps, illustrations, and photographs.
Report issued by the Bureau of Mines over development of geophysical equipment. Methods and instruments used during the studies are presented. This report includes tables, maps, and illustrations.
This dialog allows you to filter your current search.
Each of the Years listed note their name and the number of records that will be limited down to if you choose that option.