Browse mineral resources

Deniston Peak

Past Producer • Gold

Durham Ranch

Past Producer • Gold

Challenge

Past Producer • Mercury

Casey

Producer • Stone, Crushed/Broken

San Mateo Development Co.

Producer • Stone, Crushed/Broken

San Mateo Development Co.

Producer • Stone, Crushed/Broken

Gardner

Producer • Stone, Crushed/Broken

Redwood Material Co.

Producer • Manganese

North Road

Producer • Stone, Crushed/Broken

Middle Road

Producer • Stone, Crushed/Broken

Splivalo & Johnson

Producer • Stone, Crushed/Broken

Tyson

Producer • Stone, Crushed/Broken

South Road

Producer • Stone, Crushed/Broken

Quarry

Producer • Stone

Unnamed Location

Producer • Stone

Edgewood Road

Producer • Stone, Crushed/Broken

Canada Road South

Producer • Stone, Crushed/Broken

Emerald Lake

Producer • Mercury

Quarry

Producer • Stone

Brisbane

Producer • Stone, Crushed/Broken

Southern Pacific Co.

Producer • Stone, Crushed/Broken

South San Fran. Land & Imp. Co.

Producer • Silver

Macco-Morrison Knudston Costr. Co.

Producer • Stone, Crushed/Broken

Hilltop

Producer • Calcium

Skyline Quarry

Producer • Calcium

Miguel

Producer • Granite

Canada

Past Producer • Stone

Duncan

Past Producer • Sand and Gravel, Construction

Unnamed Location

Producer • Gold

Unnamed Location

Producer • Gypsum-Anhydrite

Rockaway

Producer • Calcium

Pilarcitos #138

Producer • Stone

Kaiser Gypsum

Producer • Gypsum-Anhydrite

Granite Rock

Past Producer • Sand and Gravel, Construction

J.M. Macdonough Ranch

Past Producer • Gold

Black Mtn.

Past Producer • Gold

Quarry

Producer • Stone

Britton Ranch

Producer • Stone

Canada Road North

Producer • Stone, Crushed/Broken

Daly S

Producer • Stone, Crushed/Broken

Causeway

Producer • Stone, Crushed/Broken

Healy-Tibbitts

Producer • Stone, Crushed/Broken

Holy Cross

Producer • Stone, Crushed/Broken

South S. F. Land & Improvement Co.

Producer • Stone, Crushed/Broken

H. P. A.

Producer • Stone, Crushed/Broken

El Granada

Producer • Stone

Unnamed Location

Producer • Gold

Pascadero Beach

Producer • Gemstone

Marks Materials Inc.

Producer • Calcium

Redwood City Operation

Producer • Halite

Marine Magnes Div.

Producer • Magnesite

Langley Hill Quarry

Producer • Stone

Macco-Morrison Knudston Costr. Co.

Past Producer • Stone, Crushed/Broken

Archibald

Past Producer • Stone, Crushed/Broken

Redwood Quicksilver Prospect

Unknown • Mercury

Redwood Material Co.

Past Producer • Manganese

Hilltop

Past Producer • Calcium

Rockaway

Past Producer • Sand and Gravel, Construction

Redwood City Operation

Past Producer • Salt

Unnamed Location

Past Producer • Gold

Pacifica Quarry and Mill

Producer • Stone

Quarry

Past Producer • Stone

Pilarcitos Quarry and Plant No. 138

Producer • Stone, Crushed/Broken

Pilarcitos

Past Producer • Sand and Gravel, Construction

Healy-Tibbitts

Past Producer • Stone, Crushed/Broken

Pescadero Quarry

Producer • Stone, Crushed/Broken

Pilarcitos Quarry

Producer • Sand and Gravel, Construction

South Road

Past Producer • Stone, Crushed/Broken

Quarry

Unknown • Stone

Tyson

Past Producer • Stone, Crushed/Broken

Rockaway

Past Producer • Calcium

Marks Materials

Producer • Stone, Crushed/Broken

Southern Pacific Co.

Past Producer • Stone, Crushed/Broken

Brumley-Donaldson Co.

Past Producer • Sand and Gravel, Construction

Granite Rock

Past Producer • Sand and Gravel, Construction

Daly S

Past Producer • Stone, Crushed/Broken

Canada Road South

Past Producer • Stone, Crushed/Broken

Quarry

Past Producer • Stone

South San Fran. Land & Imp. Co.

Past Producer • Silver

San Francisco Bay Dredge

Producer • Calcium

Black Mountain

Past Producer • Gold

Quarry

Past Producer • Stone

Ideal Cement Company

Producer • Limestone, General

Marine Magnesium Co. Seawater Plant

Producer • Magnesite

Pacific Coast Aggregates, Inc.

Past Producer • Sand and Gravel, Construction

Duncan

Past Producer • Sand and Gravel, Construction

Redwood City Plant

Producer • Salt

Skyline Quarry

Past Producer • Calcium

Causeway

Past Producer • Stone, Crushed/Broken

Edgewood Quarry and Mill

Producer • Stone, Crushed/Broken

Unnamed Location

Past Producer • Gypsum-Anhydrite

Miguel

Past Producer • Stone, Crushed/Broken

Brisbane Quarry

Producer • Stone

Pascadero Beach

Past Producer • Gemstone

J. M. Macdonough

Unknown • Gold

Marine Magnes Div.

Past Producer • Magnesite

Middle Road

Past Producer • Stone, Crushed/Broken

Splivalo & Johnson

Past Producer • Stone, Crushed/Broken

Kaiser Gypsum

Past Producer • Gypsum-Anhydrite

Quarry

Unknown • Stone

Holy Cross

Past Producer • Stone, Crushed/Broken

California Valley Gypsum Mine

Producer • Gypsum-Anhydrite

Durham Ranch

Unknown • Gold

El Granada

Past Producer • Stone

San Mateo Development Co.

Past Producer • Stone, Crushed/Broken

Canada Road North

Past Producer • Stone, Crushed/Broken

H. P. A.

Past Producer • Stone, Crushed/Broken

Farm Hill No 2

Past Producer • Mercury

San Mateo Development Co.

Past Producer • Stone, Crushed/Broken

Brumley-Donaldson Co.

Past Producer • Sand and Gravel, Construction

Redwood City Plant

Producer • Salt

Farm Hill Cinnabar Property

Unknown • Mercury

Langley Hill Quarry

Producer • Stone, Crushed/Broken

Sand Pit

Unknown • Sand and Gravel, Construction

Casey

Past Producer • Stone, Crushed/Broken

Unnamed Location

Past Producer • Stone

Canada

Past Producer • Stone

Vasquez

Past Producer • Stone, Crushed/Broken

Unnamed Location

Past Producer • Gold

Ideal Cement Co.

Past Producer • Limestone, Dimension

Calif. Aggregates

Past Producer • Calcium

South S. F. Land & Improvement Co.

Past Producer • Stone, Crushed/Broken

Britton Ranch

Past Producer • Stone

Dennison Peak

Prospect • Gold

Gardner

Past Producer • Stone, Crushed/Broken

North Road

Past Producer • Stone, Crushed/Broken