Angel Island Dredge
California
Unconfirmed Sand and Gravel
Construction underground mines
Catalog records where USGS source data lists Construction among mined commodities. Reported minerals on a mine page are tracked separately and are not the same as commodities.
- Underground mine records
- 11
- Independently verified
- 0
Representative records
Buckskin Project
Arizona
Unconfirmed Sand and Gravel
Gem Mine
Nevada
Unconfirmed Silver
Historical mapped workings available
Gravel Pit
Nevada
Unconfirmed Sand and Gravel
High Lonesome Pit & Plant
Arizona
Unconfirmed Sand and Gravel
Juniper
Nevada
Unconfirmed Gold
Historical mapped workings available
Los Osos Mine
California
Unconfirmed Copper
Manhatten Mine
California
Unconfirmed Mercury
Historical mapped workings available
New Party Mine
Nevada
Unconfirmed Gold
Historical mapped workings available
Oriole
Nevada
Unconfirmed Gold
Historical mapped workings available
Redwood Valley Pit and Mill
California
Unconfirmed Sand and Gravel