Mines in San Francisco County, California

San Francisco County, California has 8 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 1 of these are currently active mining operations. The most commonly recorded commodity is sand and gravel, construction, with 3 sites. The table below lists all recorded mines in the county with links to individual site details.

All Mines in San Francisco County

Mine	Commodity	Type	Status	Source
Pier 92 Marine Aggregate	Construction Sand and Gravel	Surface	Active	MSHA
Mining Claim Loc. Quicksilver Fnd.	Mercury		Prospect	MRDS
Quarry	Sand and Gravel, Construction		Past Producer	MRDS
Quarry	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Quarry	Sand and Gravel, Construction	Surface	Past Producer	MRDS
San Francisco Sand	Construction Sand and Gravel	Surface	Abandoned	MSHA
Unnamed Location	Gold		Occurrence	MRDS
Unnamed Occurrence			Occurrence	MRDS