welcome to History Hub
Found this online---just type 1920 in the Site Search or any words that you choose.
Dear Mr. Krell,
Thank you for posting your request on History Hub!
In addition to the information from the previous poster, we suggest that you search the BLM Mining Regulations, the Siskiyou County Comprehensive Land & Resource Management Plan - mining on page 28, and contact the Siskiyou County Natural Resources Specialist for information specific to your situation.
We also suggest that you review Minerals & Mining Law for a general overview of the Mineral Leasing process.
We hope this is helpful. Best of luck with your research!