Free PDF files and links of interest to members.
You can find documents covering local history, geology, and more in our on-line library. Check it out! No library card required.
- Desert Fever Mining Overview, 1980
- Julian Mining History
- Point Loma Coal Mine
- Stonewall Mine, 1886
History
- Gold Districts of California, CA Bulletin 193, 1970
- Imperial Valley Picacho Peak USGS Report, 1987
- Jacumba-Inkopah USGS Report, 1987
- San Diego County Minerals Report, 2011
- San Diego County Minerals Guide, 2008
- SDSU Geology Thesis, Thomson-Girty, 1994
- Placer Gold Recovery Methods, 1986
- San Diego County Minerals Report,1963
- Arizona Placer Gold Bulletin, 1961
Geology & Mining Reports
- Law of Possession, 1865
- Mineral Grant, 1866
- Placer Mining Act, 1870
- The Rights of Miners Act, 1871
- Miners Act Amendment, 1872
- Watershed Act, 1928
- BLM, Sec-3800:Mining Laws
- Pew Campaign to revoke mining laws
- Western Mining Alliance Dredging Fact Sheet
Mining Laws
- Nugget Shooter Article, 1999
- Ounce A Day by Garrett & Lagal
Metal Detecting
- Colorado River Guide, Blythe to the Imperial Dam
- USGS Geo-chemical Power Point Presentation
- How to Use LR2000
- Web Tutorial on LR2000
- Mesh sizes to Microns Conversion Chart
Additional Resources
Claim Use Form
After you visit an SPMA claim, please take a few minutes fill out one of our Claim Use Forms. We collect them at our meeting (or by mail) and present them to the BLM at claim renewal time. Documenting our claim use shows the BLM that we are being responsible stewards of the land and that we're good to have around. When we apply for new claims, they take our written record into consideration. We have two versions: a Print & Mail Claim Use Form and an Email Claim Use Form.
Assay Newsletter Archive
Past editions of The Assay are posted below. The most recent newsletter is also available on the News & Info page. Adobe Reader is required to view the file. You can download download and intall Adobe Reader using this link. Adobe Reader
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Assay June-2018.pdf
