Arrowhead Syndicate Mines, Inc.
Nevada · Nye County
Unconfirmed Silver Occurrence Underground
Historical mapped workings available
Development Status: Occurrence
715 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.
Atlantic
California · Amador County
Unconfirmed Gold Occurrence Underground
Historical mapped workings available
Atom Claims 1, 2, 3
Arizona · La Paz County
Unconfirmed Uranium Occurrence Mixed Underground/Surface
Historical mapped workings available
Aurora
California · Del Norte County
Unconfirmed Copper Occurrence Underground
Austeon
Nevada · Elko County
Unconfirmed Copper Occurrence Mixed Underground/Surface
Ayer
California · Yuba County
Unconfirmed Copper Occurrence Underground
B. Copper Prospect
California · Kern County
Unconfirmed Copper Occurrence Underground
Documented shaft evidence
Badders
California · Fresno County
Unconfirmed Copper Occurrence Underground
Bald Eagle
California · Shasta County
Unconfirmed Copper Occurrence Underground
Banner Hill Group
Nevada · Elko County
Unconfirmed Copper Occurrence Mixed Underground/Surface
Historical mapped workings available
Barnes
California · Plumas County
Unconfirmed Copper Occurrence Underground
Bartlett Mine
Nevada · Humboldt County
Unconfirmed Gold Occurrence Underground
Historical mapped workings available
Bear Mountain
California · Siskiyou County
Unconfirmed Copper Occurrence Underground
Beck
California · San Bernardino County
Unconfirmed Iron Occurrence Underground
Historical mapped workings available
Beehive
California · San Diego County
Unconfirmed Copper Occurrence Underground
Bell Prince
California · Calaveras County
Unconfirmed Copper Occurrence Underground
Historical mapped workings available
Bentley Prospects
Nevada · Douglas County
Unconfirmed Gold Occurrence Underground
Historical mapped workings available
Benton Mine
Arizona · Santa Cruz County
Source Corroborated Copper Occurrence Underground
Documented adit evidence
Bi-Metallic
Nevada · Elko County
Unconfirmed Copper Occurrence Underground
Big 4 Iron
California · Inyo County
Unconfirmed Iron Occurrence Mixed Underground/Surface
Documented shaft/adit evidence
Big Chief
California · Madera County
Unconfirmed Gold Occurrence Underground
Big Deal Claims
Nevada · Humboldt County
Mindat Confirmed Mercury Occurrence Underground
Documented shaft/adit evidence
Big Horn Group
California · Riverside County
Unconfirmed Copper Occurrence Underground
Big Horn Prospect
Arizona · La Paz County
Mindat Confirmed Gold Occurrence Underground
Documented shaft evidence