Sycamore CanyonOccurrence •
|
Prospect South of Sycamore CanyonOccurrence •
|
UnnamedOccurrence • Stone
|
Pittsburg Sand CompanyProducer • Silica
|
Roberts Sand Company Black DiamondProducer • Silica
|
UnknownOccurrence • Silica
|
Marchio Sand Co.Occurrence • Sand and Gravel, Construction
|
Prospects East of Russellman Sw1/4 Se1/4Occurrence • Asbestos
|
UnknownOccurrence • Mercury
|
Prospect Near Sunshine CampOccurrence • Mercury
|
Mt. Diablo Rock and Asphalt Co.Occurrence • Stone, Crushed/Broken
|
Prospect In Sycamore CanyonOccurrence • Asbestos
|
Perkins Canyon ProspectOccurrence • Asbestos
|
Prospects In Perkins CanyonOccurrence • Mercury
|
Unnamed.Occurrence • Stone
|
Antioch Sand CompanyProducer • Sand and Gravel, Construction
|
Basalt Rock CompanyOccurrence • Sand and Gravel, Construction
|
Holland Sandstone Brick Co.Occurrence • Sand and Gravel, Construction
|
Longwell Ranch Central, North and South PitsOccurrence • Sand and Gravel, Construction
|
QuarryOccurrence • Stone
|
GambettaOccurrence • Peat
|
Turtle Rock QuarryProducer • Stone, Dimension
|
MartinOccurrence • Stone, Crushed/Broken
|
Harrison-Birdwell - Pacific Cement and Aggregates Co.Producer • Stone
|
Summit of ZionPast Producer • Copper
|
Silver MineProducer • Silver
|
H. J. KaiserOccurrence • Stone, Crushed/Broken
|
Mount ZionPast Producer • Copper
|
White Diamond ClaimOccurrence • Silver, Gold
|
San Pedro ClaimOccurrence • Gold, Silver
|
Eagle PeakOccurrence •
|
Black PointOccurrence •
|
Mitchell CanyonOccurrence •
|
AlvesOccurrence • Stone, Crushed/Broken
|
AlvarnezOccurrence • Pumice
|
AlvesOccurrence • Stone, Crushed/Broken
|
N. M. Ball SonsOccurrence • Stone
|
Gallagher and BurkeOccurrence • Stone, Crushed/Broken
|
BallOccurrence • Stone, Crushed/Broken
|
MartinezOccurrence • Stone, Dimension
|
ChristenOccurrence • Stone
|
McnearsOccurrence • Stone, Dimension
|
Port Costa Clay Products Co.Occurrence • Stone
|
Henry J. Kaiser CompanyOccurrence • Stone
|
Tunnel RockOccurrence • Stone, Crushed/Broken
|
Oakland, Antioch & Eastern Rr Co.Occurrence • Stone, Crushed/Broken
|
Old Stege Bates, Boreland & Ayer. Central Const. Co., BruceOccurrence • Stone
|
UnknownOccurrence • Mercury
|
El Cerrito Stege, HutchinsonOccurrence • Stone
|
Point IsabelOccurrence • Stone
|
DiabloOccurrence • Stone, Crushed/Broken
|
Point Molate Healey-Tibbets Co.Occurrence • Stone
|
Blake Brothers San PabloOccurrence • Stone, Sand and Gravel, Construction
|
Red RockProducer • Manganese
|
Richmond Point RichmondOccurrence • Stone
|
UnknownOccurrence • Stone, Crushed/Broken
|
Brooks Island Healy - TibbittsOccurrence • Stone
|
Silver MinePast Producer • Copper
|
Mount Diablo MinePast Producer • Mercury
|
Mount Zion ChromeOccurrence • Chromium
|
UnknownOccurrence • Mercury
|
UnknownOccurrence • Mercury
|
Unnamed ProspectPast Producer • Zinc, Mercury, Copper
|
Unnamed LocationPast Producer • Silica, Sand and Gravel, Construction
|
Unnamed LocationProducer • Calcium
|
Silica Co. of CaliforniaPast Producer • Silica, Sand and Gravel, Construction
|
Silica Company of Calif.Past Producer • Silica, Sand and Gravel, Construction
|
Silica Co. of Calif.Past Producer • Silica, Sand and Gravel, Construction
|
La Felis ClaimProducer • Gold, Silver
|
Calif. Peat Co.Producer • Peat
|
Calif. Peat Co.Producer • Peat
|
Byron PlantProducer • Silica
|
UnnamedOccurrence • Stone
|
UnknownOccurrence • Stone
|
Mt. Diablo Lime Marl Co.Occurrence • Limestone, General
|
Unity ? ClaimOccurrence • Silver
|
La Feliz ClaimOccurrence • Gold, Silver
|
Arroyo Del Cerro ProspectsOccurrence • Asbestos
|
UnnamedOccurrence • Stone
|
UnnamedOccurrence • Stone
|
Bailey Ranch Pumice DepositOccurrence • Pumice
|
ImmelOccurrence • Stone, Crushed/Broken
|
UnnamedOccurrence • Stone
|
Serra Brothers SlaterOccurrence • Stone
|
Prospects North of North PeakOccurrence •
|
AntiochProducer • Silica
|
Antioch Paving Co.Producer • Stone, Crushed/Broken
|
Henry J. Kaiser CompanyProducer • Sand and Gravel, Construction
|
Cowell Silver Sand Co., LawsProducer • Silica
|
United Materials and Richmond Pressed Brick Co.Producer • Clay
|
Red RockProducer • Manganese
|
Calif. Peat Co.Producer • Peat
|
Calif. Peat Co.Producer • Peat
|
Quarry Products IncProducer • Stone
|
N. M. Ball SonsPast Producer • Sand and Gravel, Construction
|
Mt. Diablo Rock & Asphalt Co.Prospect • Stone, Crushed/Broken
|
Mitchell Canyon ProspectProspect • Copper
|
Gallagher & BurkeProducer • Stone, Crushed/Broken
|
Unnamed LocationProspect • Mercury
|
Unnamed LocationProspect • Mercury
|
Eagle PeakUnknown • Gold
|
CowellUnknown • Limestone, Dimension
|
Antioch-MarchioProspect • Silica
|
MartinezPast Producer • Stone
|
Unnamed LocationPast Producer • Stone, Crushed/Broken
|
Unnamed LocationProspect • Asbestos
|
Unnamed LocationProspect • Sand and Gravel, Construction
|
Turtle RockPast Producer • Stone
|
Unnamed LocationOccurrence • Stone
|
Stoner PitProducer • Sand and Gravel, Construction
|
Antioch Sand Co.Past Producer • Sand and Gravel, Construction
|
Mt. Diablo Lime Marl Co.Past Producer • Calcium
|
Scott PitProducer • Stone
|
Unnamed LocationProspect • Manganese
|
AntiochPast Producer • Silica
|
Blake Brothers QuarryProducer • Stone, Crushed/Broken
|
Contra Costa CompanyOccurrence • Sand and Gravel, Construction
|
Pacific Cement & Aggregates Co.Past Producer • Sand and Gravel, Construction
|
Mount. Zion Copper Co. MinePast Producer • Copper
|
Unnamed ProspectProspect • Manganese
|
Richmond MillProducer • Limestone, General
|
Tunnel RockPast Producer • Stone, Crushed/Broken
|
Mount. Diablo MinePast Producer • Mercury
|
Unnamed LocationProspect • Mercury
|
Clayton QuarryProducer • Stone, Crushed/Broken
|
Unnamed LocationProspect • Stone
|
Basalt Rock Co.Past Producer • Sand and Gravel, Construction
|
Unnamed LocationProspect • Mercury
|
1b Du Pont B Plant TiPlant • Titanium, Pigment
|
Henry J. Kaiser Co.Past Producer • Stone
|
Unnamed LocationProspect • Sand and Gravel, Construction
|
La Felis ClaimPast Producer • Gold
|
Unnamed LocationProspect • Sand and Gravel, Construction
|
Harkinson Lime DepositProspect • Calcium
|
Unnamed PropertyUnknown • Sand and Gravel, Construction
|
Mount. Zion ChromeProspect • Chromium
|
Unnamed LocationProspect • Silver
|
Unnamed LocationProspect • Stone
|
Old StegePast Producer • Stone
|
Unnamed LocationPast Producer • Calcium
|
Pacif Cement and AggregratesProducer • Stone
|
Silver SandUnknown • Sand and Gravel, Construction
|
Brssi & Land Mag CoProspect • Copper
|
Alves PitProducer • Clay
|
Unnamed LocationPast Producer • Silica
|
Unnamed LocationProspect • Mercury
|
Unnamed LocationProspect • Sand and Gravel, Construction
|
Unnamed LocationProspect • Mercury
|
Point MolatePast Producer • Stone
|
Red RockProspect •
|
Byron Hot SpringsOccurrence • Geothermal
|
Pinole Dohrman, PawseyOccurrence • Diatomite
|
UnknownOccurrence • Asbestos
|
Marchio Sand Company Antioch-MarchioOccurrence • Silica
|
Unnamed ProspectPast Producer • Zinc
|
Marchio Sand Co.Past Producer • Sand and Gravel, Construction
|
Clark & SonsProspect • Clay
|
Bailey Ranch Pumice DepositPast Producer • Pumice
|
Cowell SilverUnknown • Silver
|
Arroyo Del Carro ProspectProspect • Asbestos
|
Holland Sandstone Brick Co.Past Producer • Mercury
|
Prospects NorthUnknown • Manganese
|
Unnamed LocationProspect • Calcium
|
QuarryUnknown • Stone
|
MartinPast Producer • Stone, Crushed/Broken
|
Clayton QuarryProducer • Stone, Crushed/Broken
|
AlvarnezPast Producer • Pumice
|
PinoleProspect • Diatomite
|
Serra BrothersProspect • Stone
|
Sand Hill PitProducer • Sand and Gravel, Construction
|
El CerritoPast Producer • Stone
|
Unnamed LocationProspect • Stone
|
ChristenProspect • Stone
|
Unnamed LocationProspect • Sand and Gravel, Construction
|
Stone House RanchPast Producer • Sand and Gravel, Construction
|
Sycamore CanyonUnknown • Copper
|
Unnamed LocationProspect • Stone
|
Oakland, Antioch & Eastern Rr. Co.Past Producer • Stone, Crushed/Broken
|
Silver MinePast Producer • Silver
|
Pittsburg Sand Co.Past Producer • Silica
|
Brooks IslandPast Producer • Stone
|
San Francisco Bay DredgeProspect • Limestone, General
|
Henry Cowell Lime & Cement Co.Past Producer • Calcium
|
McnearsPast Producer • Stone
|
Black Point AditPast Producer • Copper
|
Ridgemoor Sand PlantProducer • Sand and Gravel, Construction
|
Unnamed LocationProspect • Calcium
|
DiabloProspect • Stone, Crushed/Broken
|
Unnamed LocationProspect • Mercury
|
Morris Sand Pit 1,2 and 3Producer • Sand and Gravel, Construction
|
Unnamed LocationProspect • Asbestos
|
Quarry Products IncProducer • Stone
|
Henry J. Kaiser Co.Past Producer • Sand and Gravel, Construction
|
Unnamed LocationOccurrence • Stone
|
Unnamed LocationOccurrence • Asbestos
|
Untd. Mtrls. & Rchmnd.Prssd.Brck.CoPast Producer • Clay
|
Unnamed LocationProspect • Sand and Gravel, Construction
|
Roberts Sand CompanyPast Producer • Silica
|
Unnamed LocationProspect • Manganese
|
Unnamed LocationProspect • Sand and Gravel, Construction
|
Mount Zion Copper CompanyOccurrence • Copper
|
Summit of Zion MinePast Producer • Copper
|
Unnamed LocationsProspect • Mercury
|
Unnamed LocationProspect • Mercury
|
Main Mine & MillProducer • Stone, Crushed/Broken
|
Parkins Canyon ProspectProspect • Asbestos
|
Port Costa Shale QuarrysProducer • Stone, Crushed/Broken
|
Point IsableProspect • Stone
|
Longwell RanchPast Producer • Sand and Gravel, Construction
|
Unnamed LocationProspect • Mercury
|
Unnamed LocationOccurrence • Asbestos
|
Perkins Canyon ProspectProspect • Mercury
|
Unnamed LocationOccurrence • Stone
|
BallPast Producer • Stone, Crushed/Broken
|
Henry J. KaiserUnknown • Stone
|
Byron PitProducer • Silica
|
Unnamed LocationProspect • Mercury
|
San Pedro ClaimPast Producer • Gold
|
Oakley PitProducer • Sand and Gravel, Construction
|
White Diamond ClaimPast Producer • Silver
|
Richmond Avenue QuarryProducer • Stone
|
Henry J. Kaiser Co.Past Producer • Stone
|
Unnamed LocationOccurrence • Clay
|
Unnamed LocationOccurrence • Stone
|
WillsProspect • Sand and Gravel, Construction
|
Richfield Oil Co.Prospect • Stone, Crushed/Broken
|
ImmelPast Producer • Stone, Crushed/Broken
|
Silico PitProducer • Silica
|