16 To 1 Mine
Nevada · Esmeralda County
Unconfirmed Silver Producer Underground
Documented adit evidence
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.
16 to 1 Mine
Nevada · Esmeralda County
Unconfirmed Silver Producer
Documented adit evidence
A-1 Claims
Arizona · Graham, Greenlee County
Unconfirmed Manganese Producer Mixed Underground/Surface
Documented shaft evidence
Ace of Spades
California · Tuolumne County
Unconfirmed Chromium Producer
Acquisition Mine
Arizona · Yavapai County
Unconfirmed Gold Producer Underground
Historical mapped workings available
Adjust Mine
Arizona · Pinal County
Unconfirmed Lead Producer Underground
Documented shaft evidence
Ajax Mine
Arizona · Pinal County
Source Corroborated Lead Producer Underground
Documented shaft/adit evidence
Ajax Mine Group
Arizona · Pima County
Unconfirmed Gold Producer Mixed Underground/Surface
Historical mapped workings available
Ajo Peak Mine
Arizona · Pima County
Unconfirmed Copper Producer Mixed Underground/Surface
Documented shaft evidence
Akere Group
California · Shasta County
Unconfirmed Copper Producer
Al and Hal Mine
Arizona · Gila County
Unconfirmed Copper Producer Underground
Historical mapped workings available
Alabama
California · Tuolumne County
Unconfirmed Gold Producer Underground
Documented shaft/adit evidence
Alaska Mine
Arizona · Yavapai County
Unconfirmed Gold Producer Underground
Documented shaft evidence
Albatross Mine
Arizona · Pima County
Unconfirmed Gold Producer Underground
Documented shaft/adit evidence
Alice Mine
Arizona · Pinal County
Mindat Confirmed Copper Producer Underground
Documented adit evidence
Alma Mine
Arizona · Yavapai County
Unconfirmed Gold Producer Underground
Historical mapped workings available
Alpha Mine
Arizona · Pima County
Unconfirmed Copper Producer Underground
Historical mapped workings available
Alpine Mine
Nevada · Pershing County
Unconfirmed Tungsten Producer Mixed Underground/Surface
Alta
California · Calaveras County
Unconfirmed Gold Producer Mixed Underground/Surface
Documented adit evidence
Altaville
California · Calaveras County
Unconfirmed Gold Producer Underground
Documented shaft evidence
Alto Mine
California · Calaveras County
Unconfirmed Gold Producer Mixed Underground/Surface
Documented shaft/adit evidence
Amado Mine Group
Arizona · Pima County
Unconfirmed Gold Producer Underground
Historical mapped workings available
Ambassador Mine
Arizona · Yavapai County
Source Corroborated Gold Producer Underground
Documented adit evidence
American Asbestos & Manufacturing Co. Mine
California · Calaveras County
Unconfirmed Chromium Producer