Underground mines
20
California · 20 underground-eligible mines · USGS MRDS district assignment
20
0
AUTHORITATIVE (USGS dep_id)
Mining district documented in USGS MRDS for underground-eligible catalog records.
California · Shasta County
Unconfirmed Copper Occurrence Underground
California · Shasta County
Unconfirmed Silver Past Producer Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Past Producer Underground
California · Shasta County
Unconfirmed Copper Occurrence Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Occurrence Underground
California · Shasta County
Unconfirmed Copper Past Producer Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Occurrence Mixed Underground/Surface
California · Shasta County
Unconfirmed Copper Past Producer Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Occurrence Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Occurrence Underground
California · Shasta County
Unconfirmed Copper Occurrence Underground
California · Shasta County
Unconfirmed Copper Occurrence Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Occurrence Underground
California · Shasta County
Unconfirmed Copper Occurrence Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Occurrence Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Occurrence Underground
California · Shasta County
Unconfirmed Copper Occurrence Underground
California · Shasta County
Unconfirmed Silver Past Producer Underground
Historical mapped workings available
California · Shasta County
Unconfirmed Copper Occurrence Underground
Documented adit evidence
California · Shasta County
Unconfirmed Silver Past Producer Underground
No district boundary polygons are shown. Membership is not inferred from map proximity.