Union City, CA Mines

Mine	Owner	Land Status	Minerals
Bellini Quarry	Oliver Desiva, Inc		Stone, Crushed
Clay Pit			Clays
Durham Pit		Private	Stone
East Bay Excavation Co		Unknown	Stone, Crushed
Gravel Pit		Private	Sand and Gravel
Gravel Pit			Sand and Gravel
Gravel Pit			Sand and Gravel
Gravel Pit			Sand and Gravel
Gravel Pit		Unknown	Sand and Gravel
H.J. Kaiser Co.		Private	Sand and Gravel
H.J. Kaiser Co.		Private	Sand and Gravel
Inland Aggregates			Sand and Gravel
Inland Aggregates		Unknown	Sand and Gravel
Interpace		Unknown	Clays Silica
Kraftile Clay Pit	Kraftile Co.	Unknown	Clays
La Vista Quarry and Mill			Stone
La Vista Quarry and Mill	East Bay Excavating Co., Inc.	Unknown	Stone
Niles Pit		Unknown	Sand and Gravel
Niles Pit & Mill		Unknown	Sand and Gravel
Niles Pit and Mill		Unknown	Sand and Gravel
Niles Quarry	Mission Clay Products Corp.	Unknown	Stone, Crushed
Niles Sand and Gravel Pit	California Nursery	Unknown	Sand and Gravel
Oakland Dredge Concrete		Private	Sand and Gravel
Oliver Salt		Unknown	Sodium
Quarry Products-Niles		Unknown	Sand and Gravel
Rhodes & Jamieson Centerville Plant		Private	Sand and Gravel
Silva Bros.		Private	Sand and Gravel
Silva Bros.		Private	Sand and Gravel
Unknown			Stone
Unnamed Location		Unknown	Clays
Unnamed Location		Unknown	Clays
Unnamed Location		Unknown	Stone
Unnamed Location		Unknown	Clays