Porterville, CA Mines

Mine	Owner	Land Status	Work Type	Minerals
Bolam and Pinger		Unknown		Magnesium
Brock Pit	Brock, J. D.			Sand and Gravel
Calif Magnesite Camps 2 and 3		Unknown		Magnesium
Deer Creek Silver		Unknown		Copper Gold Silver
Frazier Valley Borrow Pit	Bar Rg Ranches			Stone, Crushed
Gill Borrow Pit	Gill, Lee			Stone, Crushed
Holdridge		Unknown		Limestone
Holston Mine		Private	Surface/Underground	Chromium PGE
Holston Mine	Holston, Howard V.	Private	Underground	Chromium Chromium Iron Iron
Jeffers		Unknown		Sand and Gravel
Lewis Hill Chromite Prospect		Unknown		Chromium
Middletons Sequoia Rock Co.		Unknown		Gold Sand and Gravel Silver
Nanceville Pit	Porterville Ready Mix			Sand and Gravel
Oakland Magnesite Co.		Unknown		Magnesium
Porterville		Unknown		Magnesium
Porterville White Granite Quarry		Unknown		Stone
Prospect Near Holston Chrome		Private		Chromium PGE
Quiram and Sons		Unknown		Sand and Gravel
Reservation Road Pit and Mill		Unknown		Sand and Gravel
Tulare Mining Co.		Unknown		Magnesium
Unnamed Location		Unknown		Gemstones
Valencia Heights		Unknown		Clays