Large-Format Mine Maps - Interactive Map
Updated 7/10/2026
To access large-format mine maps, please visit the Mineral Information Layer for Oregon interactive map and select the "Large Format Maps Not Connected with a MILO Point" layer. These digital records are scans of the literature originally found in DOGAMI published and unpublished hardcopy holdings in the Portland and Grants Pass offices. Hardcopy was scanned and saved in .tiff format. Tiffs were then converted to PDFs.
Disclaimer: Mining sites are included for informational purposes only and should not be used to infer acceptable or permitted land use actions. Interested parties should contact their local land use authority to verify zoning and applicable land use ordinances. Respect the rights of private property owners. Understand that recreation in or around inactive mine sites is extremely dangerous and can result in serious injury or death. Stay out and stay alive! No warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. These data should not be used for site-specific studies. The Oregon Department of Geology and Mineral Industries shall not be held liable for improper or incorrect use of the data described and/or contained herein.
This digital archive is evolving. Please contact us if you have suggestions or find errors.
Questions?
Email: dogami-info@oregon.gov
Phone: 971-673-1555