Abril Mine
Arizona · Cochise County
Unconfirmed Copper Past Producer
Documented shaft/adit evidence
Development Status: Past Producer
10337 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.
Accident Mine
Nevada · Clark County
Mindat Confirmed Lead Past Producer Underground
Historical mapped workings available
Accident Mine
Nevada · Clark County
Mindat Confirmed Lead Past Producer
Historical mapped workings available
Ace of Diamonds Claim
Nevada · Lander County
Unconfirmed Lead Past Producer
Historical mapped workings available
Ackerman Mine
Nevada · Mineral County
Unconfirmed Gold Past Producer
Historical mapped workings available
Acme and Ruby Silver Groups
Arizona · Pima County
Unconfirmed Copper Past Producer
Acme Mine
California · San Bernardino County
Unconfirmed Talc-Soapstone Past Producer
Historical mapped workings available
Acolian Group
Arizona · Pima County
Unconfirmed Lead Past Producer
Documented shaft evidence
Ada & Edith Claims
Nevada · Clark County
Unconfirmed Lead Past Producer
Documented shaft/adit evidence
Ada H. Mine
Nevada · Elko County
Source Corroborated Lead Past Producer
Documented shaft/adit evidence
Adams
California · Placer County
Unconfirmed Gold Past Producer Underground
Adams
Arizona · Mohave County
Unconfirmed Gold Past Producer
Adams
Nevada · Esmeralda County
Unconfirmed Gold Past Producer
Historical mapped workings available
Adams Gulch
California · El Dorado County
Unconfirmed Gold Past Producer Underground
Adams Mine
Nevada · Esmeralda County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Adams Mine Group
Arizona · Yuma County
Unconfirmed Fluorine-Fluorite Past Producer
Historical mapped workings available
Adams Mine Group
Arizona · Yuma County
Unconfirmed Lead Past Producer Underground
Historical mapped workings available
Adams Rib Mine
Nevada · Nye County
Unconfirmed Gold Past Producer
Historical mapped workings available
Adamson Mine
Nevada · Humboldt County
Unconfirmed Gold Past Producer
Documented adit evidence
Addie
California · Calaveras County
Unconfirmed Gold Past Producer Underground
Documented adit evidence
Addison Mine
Nevada · Clark County
Source Corroborated Zinc Past Producer
Documented adit evidence
Adelaide
California · Sierra County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available
Adelaide
California · Siskiyou County
Unconfirmed Gold Past Producer Underground
Documented adit evidence
Adelaide
California · Calaveras County
Unconfirmed Gold Past Producer Underground
Historical mapped workings available