Amulet Mine
Arizona · Yavapai County
Unconfirmed Silver Producer Underground
Development Status: Producer
726 underground-eligible catalog records with this USGS development status.
Development status is not verification status
USGS development status (Producer, Past Producer, Prospect, Occurrence) describes the source record’s development context. UndergroundMines verification status (Unconfirmed, Verified, etc.) is a separate community/admin confirmation layer.
Angel Island Dredge
California · Marin County
Unconfirmed Sand and Gravel Producer
Annete Mine
Arizona · Pima County
Unconfirmed Silver Producer Underground
Historical mapped workings available
Antelope Mine
Arizona · Pinal County
Source Corroborated Copper Producer Underground
Documented adit evidence
Antietam Mine
Arizona · Greenlee County
Unconfirmed Copper Producer Underground
Historical mapped workings available
Antimony King Mine
Nevada · Churchill County
Unconfirmed Antimony Producer Mixed Underground/Surface
Historical mapped workings available
Apex Mine
Arizona · Gila County
Unconfirmed Gold Producer Underground
Historical mapped workings available
Arizona Central Mine
Arizona · Greenlee County
Unconfirmed Copper Producer Mixed Underground/Surface
Historical mapped workings available
Arizona National Mine
Arizona · Yavapai County
Unconfirmed Silver Producer Underground
Historical mapped workings available
Arpa Group
California · Shasta County
Unconfirmed Copper Producer
Ash Peak
Arizona · Greenlee County
Unconfirmed Manganese Producer
Documented shaft evidence
Ash Peak Mines
Arizona · Greenlee County
Unconfirmed Silver Producer Mixed Underground/Surface
Historical mapped workings available
Ashdown Mine
Nevada · Humboldt County
Unconfirmed Gold Producer Underground
Historical mapped workings available
Ashdown Mine Gold-Molybdenum Project
Nevada · Humboldt County
Unconfirmed Gold Producer
Historical mapped workings available
Ashdown Property
Nevada · Humboldt County
Unconfirmed Molybdenum Producer
Historical mapped workings available
Atlanta Mine
Nevada · Lincoln County
Unconfirmed Gold Producer Mixed Underground/Surface
Historical mapped workings available
Atlanta Mine
Nevada · Lincoln County
Unconfirmed Gold Producer
Historical mapped workings available
Augusta Mine
Arizona · Santa Cruz County
Unconfirmed Lead Producer Underground
Historical mapped workings available
Auld Lang Syne Mine
Nevada · Pershing County
Unconfirmed Gold Producer Underground
Historical mapped workings available
Aurora Mine Area
Nevada · Mineral County
Unconfirmed Gold Producer
Historical mapped workings available
Aztec Mine Group
Arizona · Santa Cruz County
Unconfirmed Copper Producer Mixed Underground/Surface
Documented adit evidence
Azurite Property
Arizona · Gila County
Unconfirmed Copper Producer
Documented shaft/adit evidence
Backbone Mine
Arizona · Pima County
Unconfirmed Gold Producer Underground
Historical mapped workings available
Badger Mine
Arizona · Pima County
Unconfirmed Gold Producer Underground
Documented shaft evidence