Records
64
San Luis Obispo County Underground Mines
California · 64 underground-eligible records
Verified
0
Unconfirmed
64
With photos
0
Major commodities
- Mercury · 28
- Chromium · 20
- Manganese · 6
- Copper · 6
- Gold · 1
- Gypsum-Anhydrite · 1
- Antimony · 1
- Iron · 1
Working types (source)
- Other / unspecified · 37
- Underground · 16
- Mixed Underground/Surface · 11
Related mining districts
- Cuesta Pass · 6
- Pine Mountain · 6
Mines in this county
Buckeye
California
Unconfirmed Mercury
Historical mapped workings available
Buena Vista
California
Unconfirmed Mercury Mixed Underground/Surface
Documented adit evidence
Cambria
California
Unconfirmed Mercury
Deer Trail
California
Unconfirmed Mercury
Documented adit evidence
Estrella Mine
California
Unconfirmed Chromium
Fitzhugh Ranch
California
Unconfirmed Mercury
Hamilton
California
Unconfirmed Mercury
Keystone
California
Unconfirmed Mercury
Documented adit evidence
La Libertad
California
Unconfirmed Mercury
Los Osos Mine
California
Unconfirmed Copper
Ocean View
California
Unconfirmed Mercury
Historical mapped workings available
Prodigal Son
California
Unconfirmed Gold
Refugio
California
Unconfirmed Copper
Silver Swan
California
Unconfirmed Copper
Deer Trail Mine
California
Unconfirmed Mercury
Documented adit evidence
Estrella Mine
California
Unconfirmed Chromium
Hamilton Mine
California
Unconfirmed Mercury
Josephine Group
California
Unconfirmed Mercury
Klau Mine
California
Unconfirmed Mercury Mixed Underground/Surface
Documented adit evidence
Los Osos Mine
California
Unconfirmed Copper
Madrone
California
Unconfirmed Mercury Mixed Underground/Surface
Mahoney
California
Unconfirmed Mercury Mixed Underground/Surface
Historical mapped workings available
Mescal Mine
California
Unconfirmed Chromium Mixed Underground/Surface
Norcross Mine
California
Unconfirmed Chromium Mixed Underground/Surface
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