Browse mineral resources

Black Mountain Prospect

Occurrence • Manganese

Egenes Deposit

Occurrence •

Hearst Ranch - Marmelejo Creek Deposit

Occurrence • Manganese

Hearst Ranch - Red Rock Deposit

Producer • Manganese

Hill Prospect

Occurrence • Manganese

Hobson Claims

Occurrence •

Kester Prospect

Occurrence •

Lanscioni Prospect

Occurrence •

Marquart Prospect

Occurrence •

Mayfield Prospect

Occurrence •

Mello Prospects

Occurrence •

Morro Bay Deposit

Occurrence •

Muscio Prospect

Producer • Manganese

Phelan Prospect

Occurrence •

Prefumo Canyon Prospects

Occurrence •

Ricioli Prospect

Occurrence •

Serrano Prospect

Occurrence •

Staneuche Mine

Producer • Manganese

Tobacco Creek Prospect

Occurrence •

Vollmer Prospect

Occurrence •

Manini Property

Occurrence •

San Luis Obispo Nickel

Occurrence •

Barbara

Occurrence •

Bonanza Group

Occurrence •

Florence

Occurrence •

Guerro

Occurrence •

Hazzard Group

Occurrence •

Hobson

Occurrence •

Little Bend Group

Occurrence •

Prodigal Son

Occurrence •

Ridge

Occurrence • Nickel, Silver, Gold

San Ramon

Past Producer • Copper

Schweider and Mccles

Occurrence •

Yoakum Tract

Occurrence •

Tamney

Occurrence •

William Tell

Occurrence • Mercury

Madrone

Past Producer • Mercury

Little Bonanza

Past Producer • Mercury

La Libertad

Producer • Mercury

Klau

Producer • Mercury

Kismet

Occurrence •

Cypress Mountain

Occurrence •

Mahoney

Producer • Mercury

Vulture

Past Producer • Mercury

Oceanic

Past Producer • Mercury

Marquart

Occurrence •

Cambria

Past Producer • Mercury

Williams

Occurrence •

Warren

Occurrence •

Quien Sabe

Past Producer • Mercury

Ocean View

Past Producer • Mercury

Pine Mountain

Past Producer • Mercury

Keystone

Past Producer • Mercury

Doty

Past Producer • Mercury

Hamilton

Past Producer • Mercury

Polar Star

Past Producer • Mercury

Deer Trail

Past Producer • Mercury

Chromic Acid No. 1 Claim

Occurrence • Chromium

Chromic Acid No. 2 Claim

Past Producer • Chromium

Cienaga Mine

Producer • Chromium

Colorado Mine

Past Producer • Chromium

Cypress Prospect, Pick and Shovel Group

Occurrence • Chromium

Eagle Claim

Producer • Chromium

El Salto Mine

Producer • Chromium

Estrella Mine

Past Producer • Chromium

Eucalyptus No. 2 Deposit

Occurrence • Chromium

Eureka Claim

Occurrence • Chromium

Hilltop Claim

Occurrence • Chromium

Jasper Claim

Occurrence • Chromium

Unknown

Occurrence • Chromium

Laflor Claim

Occurrence • Chromium

Leitner Claim

Producer • Chromium

Low Ranch Deposit

Past Producer • Chromium

Lucky Strike Mine

Past Producer • Chromium

Mescal Mine

Past Producer • Chromium

Moonbeam No. 1 Deposit

Occurrence • Chromium

Mountain View Deposit

Occurrence • Chromium

Negrohead

Past Producer • Chromium

Ore Bag Claim

Occurrence • Chromium

Porta Brothers Ranch Claims

Occurrence • Chromium

Rancho Piedra Blanca Occurrence

Occurrence • Chromium

Rodilla Occurrence

Occurrence • Chromium

Rogers Ranch Occurrence

Occurrence • Chromium

Rogers San Carpojaro Creek Deposits

Occurrence • Chromium

Russ Deposit

Occurrence • Chromium

San Carpojaro Creek Deposits

Occurrence • Chromium

Santa Clara Deposit

Occurrence • Chromium

Starlight Occurrence

Occurrence • Chromium

Sunrise Nos. 1 and 2 Deposits

Occurrence • Chromium

Tip Top Deposit, Sweetwater-Norcross Group

Past Producer • Chromium

Victory No. 3, Sweetwater-Norcross Group

Past Producer • Chromium

Vulture Occurrence

Past Producer • Chromium

Welch Ranch Occurrence

Occurrence • Chromium

West Norcross Mine

Past Producer • Chromium

Zerfing Ranch Deposit

Past Producer • Chromium

Norcross Mine

Past Producer • Chromium

Sweetwater Mine

Past Producer • Chromium

Seeley Group

Past Producer • Chromium

Castro Mine

Past Producer • Chromium

New London Mine

Past Producer • Chromium

Pick and Shovel Mine

Past Producer • Chromium

Questa Prospect

Occurrence • Chromium

Los Osos

Past Producer • Copper

San Luis Obispo

Producer • Mercury

Castro Mine-Trinidad Mine

Producer • Chromium

Pine Mountain Claims

Producer • Chromium

Buena Vista

Producer • Mercury

Middlecrest Ranch Deposit

Producer • Chromium

Silver Swan

Past Producer • Copper

First Chance Mine

Prospect • Copper

Eucalyptus No 1 Claim

Producer • Chromium

Norcross Mine

Producer • Chromium

Los Osos Mine

Past Producer • Copper

Jobe Ranch Mine

Producer • Manganese

Castro Mine

Producer • Chromium

El Prinero Mine

Producer • Chromium

Pick & Shovel Mine

Producer • Chromium

Chorro Mine

Producer • Chromium

Johnson Ranch Deposit

Producer • Chromium

Single Jack Mine

Producer • Chromium

Barnaberg Mine

Producer • Magnesite

Lucky Strike Mine

Producer • Chromium

San Jose Valley Mine

Producer • Mercury

Still Ranch Property

Producer • Gold

Queen Bee Mine

Producer • Gold

Arrisa Mine

Producer • Gypsum-Anhydrite

Owen Group

Producer • Uranium

Evans Manganese Prospects

Occurrence •

Isom Prospect

Occurrence •

Refugio

Occurrence •

Crown Point Claim, Seeley Group

Past Producer • Chromium

Rawhide Occurrence, Pick and Shovel Group

Past Producer • Chromium

Wittenberg Ranch

Past Producer • Mercury

Fitzhugh Ranch

Past Producer • Mercury

Little Almaden

Past Producer • Mercury

Buckeye

Past Producer • Mercury

Rinconada

Past Producer • Mercury

Central Claims, Seeley Group

Past Producer • Chromium

Outpost Claims

Past Producer • Chromium

La Primera

Past Producer • Chromium

Trinidad Mine

Past Producer • Chromium

Barneberg Mine

Producer • Manganese

*onnor Ranch Deposits

Producer • Manganese

Thompson Deposit

Producer • Manganese

Captian Deposit

Producer • Chromium

Colonel Deposit

Producer • Chromium

El Divisadero

Producer • Chromium

Pereira Group Claims

Producer • Chromium

Owen-Mitchell-Hillbilly

Producer • Uranium

Gemstone Nos. 1, 2, & 3

Producer • Mercury

Gambrie Mine

Producer • Mercury

Little Bonanza Mine

Producer • Mercury

Jitney Mine

Producer • Chromium

Welch Mine

Producer • Manganese

Bluebird Mine

Producer • Manganese

New London Mine

Producer • Chromium

Trinidad Mine

Producer • Chromium

Sunshine Claim

Producer • Chromium

Lee Quarry

Producer • Stone

Johnson Ranch Deposit

Past Producer • Chromium

Santa Margarita Ranch Shell Dep.

Past Producer • Calcium

Unnamed Quarry

Past Producer • Stone, Crushed/Broken

Clyd* Saylor Prospect

Occurrence • Uranium

Unnamed Prospect

Prospect • Diatomite

Grey Eagle Mine

Past Producer • Pumice

Gravel Pits

Past Producer • Sand and Gravel, Construction

Borrow Pit

Past Producer • Sand and Gravel, Construction

Cambria Mine

Past Producer • Mercury

Eureka Claim

Prospect • Chromium

Gravel Pit

Past Producer • Sand and Gravel, Construction

San Luis Obispo

Unknown • Mercury

Surprise Placer

Prospect • Gold

Moonbeam No. 1

Prospect • Chromium

Bisho*S Peak Quarry

Past Producer • Stone, Crushed/Broken

Wittenberg Mine

Prospect • Mercury

Porter Pit

Producer • Sand and Gravel, Construction

Mescal Mine

Prospect • Chromium

Phelan Prospect

Occurrence •

Evans Ranch Deposit

Occurrence • Chromium

La Libertad Mine

Past Producer • Mercury

Morro Bay Prospect

Prospect •

Almaden Deposit

Occurrence • Limestone, General

Miller Sand Pit

Producer • Sand and Gravel, Construction

Rodrigues Pit

Producer • Stone

Leitner Claim

Past Producer • Chromium

Klau Mine

Past Producer • Mercury

Seeley Group

Past Producer •

Carrizo Plain Deposits

Past Producer • Gypsum-Anhydrite

Unnamed Property

Prospect • Chromium

Little Bonanza Mine

Past Producer • Mercury

Unnamed Quarry

Past Producer • Stone, Crushed/Broken

Sandpit

Past Producer • Sand and Gravel, Construction

Hard Face Chromite Mine

Past Producer • Chromium

Los Berros Canyon

Occurrence • Uranium

Rocky Canyon Quarry

Producer • Stone, Crushed/Broken

Lopez Canyon Group

Prospect • Limestone, General

Santa Rita Stone Quarry

Producer • Stone, Crushed/Broken

Kismet Group

Prospect • Mercury

Low Ranch Deposit

Unknown • Chromium

Unnamed Prospect

Prospect • Mercury

San Luis Range Diatomite

Past Producer • Diatomite

Ferrell Deposit

Occurrence • Diatomite

Mercury Belle Mine

Prospect • Mercury

Gravel Pit

Past Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Rinconada Mine

Past Producer • Mercury

Unnamed Pits

Past Producer • Sand and Gravel, Construction

Bluebird Mine

Past Producer •

Gravel Pits

Past Producer • Sand and Gravel, Construction

Borrow Pit

Past Producer • Sand and Gravel, Construction

Dana Ranch Pit

Producer • Sand and Gravel, Construction

Frank Tate Ranch Pit

Past Producer • Stone, Crushed/Broken

North Star

Unknown • Mercury

San Carpojaro Creek Deposits

Prospect • Chromium

Kolrich Pit

Producer • Stone, Crushed/Broken

Davis Quarry

Producer • Stone, Crushed/Broken

Unnamed Limestone Deposit

Occurrence • Limestone, General

Gemstone Nos. 1, 2, & 3

Prospect • Mercury

Ocean View Mine

Prospect • Mercury

Millhollin Pit

Producer • Stone, Crushed/Broken

Egenes Prospect

Occurrence •

Fitzhugh Ranch Deposits

Prospect • Chromium

Mountain View Deposit

Prospect • Chromium

Chorro Mine

Past Producer • Chromium

Norcross Mine

Past Producer • Chromium

Russ Deposit

Unknown • Chromium

Capitola Mine

Prospect • Mercury

San Ramon Nos. 1, 2, 3, & 4

Past Producer • Copper

Mt. Butte Chromite Property

Occurrence • Chromium

Pine Mountain Mine

Past Producer • Mercury

Bianchi Quarry

Producer • Stone, Crushed/Broken

La Panza Prospect

Occurrence • Uranium

First Chance Mine

Prospect • Copper

Cienaga Mine

Prospect • Chromium

Single Jack Mine

Past Producer • Chromium

Marquart Mine

Prospect • Antimony

Lucky Jake Chromite

Prospect • Chromium

Tassajara Group

Prospect • Limestone, General

Frasier Canyon Deposit

Prospect • Gold

Lime Mountain Quarry

Producer • Limestone, General

Beartrap Creek Area

Prospect • Gold

Young Deposit

Producer • Manganese

Unnamed Mine

Prospect • Chromium

Muscio Prospect

Past Producer •

Arroyo Grande Creek Deposit

Occurrence • Gypsum-Anhydrite

Santa Maria River Pit

Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Dougherty Quarry

Past Producer • Stone, Crushed/Broken

Gravel Pit

Past Producer • Sand and Gravel, Construction

Guerro

Prospect • Copper

Mutual Chrome Mine

Prospect • Chromium

Mora Brothers Quarry

Past Producer • Stone

Unnamed Quarry

Past Producer • Stone, Crushed/Broken

Porfumo Canyon Iron Occurrences

Occurrence • Iron

Unnamed Quarry

Past Producer • Sand and Gravel, Construction

Vollmer Prospect

Prospect •

Oceano Sand Pit

Producer • Sand and Gravel, Construction

Captain Claim

Prospect • Chromium

Unnamed Deposit

Past Producer • Sand and Gravel, Construction

Unnamed Limestone Deposit

Occurrence • Limestone, General

Doty Mine

Prospect • Mercury

Gravel Pit

Past Producer • Sand and Gravel, Construction

Central Claims

Prospect • Chromium

Rancho Santa Rita

Past Producer • Chromium

Gravel Pit

Past Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Branch Pit

Producer • Sand and Gravel, Construction

Rancho San Simeon Pit

Producer • Stone, Crushed/Broken

Unnamed Limestone Deposit

Occurrence • Limestone, General

Gravel Pit

Past Producer • Sand and Gravel, Construction

Bee Tee Prospect

Occurrence • Uranium

Oceanic Mine

Past Producer • Mercury

El Divisadero Mine

Past Producer • Chromium

Unnamed Prospect

Prospect • Mercury

Sunset View Mine

Unknown • Mercury

Santa Maria River Pit

Producer • Sand and Gravel, Construction

J Prospect

Occurrence • Uranium

Hobson Claims

Occurrence •

Pereira Claims

Prospect • Chromium

Johe Ranch Deposit

Occurrence • Chromium

Unnamed Pumice Occurrence

Occurrence • Pumice

Santa Maria River Pit

Producer • Sand and Gravel, Construction

Unnamed Shaft

Prospect • Gold

Castro Mine

Past Producer • Chromium

Chromic Acid No. 1 Claim

Prospect • Chromium

American Canyon Area

Prospect • Gold

Keystone Mine

Past Producer • Mercury

Sycamore Road Pit

Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Pine Mountain Claims

Past Producer • Chromium

Welch Ranch Deposit

Prospect • Chromium

Morgan Limestone Deposit

Occurrence • Limestone, General

Barneberg Mine

Past Producer •

Barbara Claim

Prospect • Copper

Last Chance

Past Producer • Gold

North Star Claims

Prospect • Copper

Unnamed Quarry

Past Producer • Pumice

Front Door Group

Occurrence • Uranium

Tobacco Creek Prospect

Occurrence •

Miller Pit

Producer • Sand and Gravel, Construction

Rodilla

Prospect • Chromium

Froom Ranch Deposit

Prospect • Chromium

Lucky Jack Group

Prospect • Copper

S. P. Dayton Ranch

Unknown • Gold

Miller Well #2 Mine

Producer • Gypsum-Anhydrite

S. Aumaier Deposit

Occurrence • Dolomite

Mable G Mine

Past Producer • Chromium

Gloria Placer

Prospect • Gold

Cienega Creek Quarry

Producer • Stone, Crushed/Broken

Sousa Ranch Deposit

Past Producer • Chromium

Sunshine Claims

Prospect • Chromium

Trinidad Mine

Past Producer • Chromium

Grieb Ranch Quarry

Producer • Flagstone

Owen Group

Past Producer • Uranium

*onnor Ranch Mine

Past Producer •

Steele Ranch Magnesite

Occurrence • Magnesite

Antelope Mud Company

Past Producer • Clay

Santa Margarita Platinum Occurrence

Occurrence • Platinum

San Simeon Creek Shell Deposits

Occurrence • Calcium

Lee Quarry

Past Producer • Stone, Crushed/Broken

Staneuche Mine

Past Producer •

Sunrise No. 1

Prospect • Chromium

Mello Prospects

Past Producer •

Paso Pit and Mill

Past Producer • Sand and Gravel, Construction

B.E. Prospect

Occurrence • Uranium

Pacific Coast Coal Company

Past Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Queen Bee Mine

Past Producer • Gold

Borrow Pit

Past Producer • Sand and Gravel, Construction

Homeplace Pit

Producer • Stone, Crushed/Broken

Santa Maria Rock Company

Past Producer • Stone, Crushed/Broken

Shandon Deposit

Past Producer • Gypsum-Anhydrite

Haynes Prospects

Occurrence • Gold

Middlemast Ranch Deposit

Past Producer • Chromium

James Wheeler Claims

Prospect • Chromium

Bonanza Group

Prospect • Copper

Welch Mine

Past Producer •

Santa Margarita Prospects

Prospect • Uranium

Pick and Shovel Mine

Past Producer • Chromium

Alano Creek Deposits

Occurrence • Gypsum-Anhydrite

Jasper Claim

Unknown • Chromium

Josephine Group

Past Producer • Mercury

Marquart Prospect

Occurrence •

Unnamed Prospect

Prospect • Chromium

Vulture Mine

Prospect • Mercury

Unnamed Manganese Occurrence

Occurrence • Manganese

Farm Camp Quarry No. 5

Producer • Gypsum-Anhydrite

El Salto Mine

Past Producer • Chromium

Lanscioni Prospect

Occurrence •

Tiber Canyon Sand Pit

Producer • Sand and Gravel, Construction

Unnamed Prospect

Prospect • Mercury

Domechini Pit

Producer • Sand and Gravel, Construction

Unnamed Shaft

Prospect • Gold

Los Osos Mine

Past Producer • Copper

Refugio Claim

Unknown • Copper

Nicholson Red Rock Pit

Past Producer • Sand and Gravel, Construction

Ormond Road Pit

Producer • Sand and Gravel, Construction

Stanley Mountain Rare Ii Area

Prospect • Gold

Patchett Pit

Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Stone, Crushed/Broken

Mayfield Prospect

Occurrence •

Morning Star Placer Mining Co.

Occurrence • Gold

Johe Ranch Mine

Past Producer •

Oceano Beach Foundry Sand

Past Producer • Sand and Gravel, Construction

12th Street Pit

Producer • Sand and Gravel, Construction

North River Road Pit

Producer • Sand and Gravel, Construction

Steele Ranch Deposit

Prospect • Chromium

Unnamed Prospect

Prospect • Feldspar

Madrone Mine

Prospect • Mercury

Fine Enterprises

Prospect • Mercury

Lucky Strike Mine

Past Producer • Chromium

Pine Mountain Trail Prospect

Occurrence • Uranium

Colorado Mine

Past Producer • Chromium

San Simeon Creek Deposit

Past Producer • Antimony

Prodigal Son

Prospect • Copper

Gravel Pit

Past Producer • Sand and Gravel, Construction

Sandpit

Past Producer • Sand and Gravel, Construction

La Panza Project

Prospect • Uranium

Rogers San Carpojaro Creek Deposits

Occurrence • Chromium

Black Widow

Prospect • Uranium

F Prospect

Prospect • Copper

Goldtree Vineyard Mine

Past Producer • Chromium

Unnamed Diatomite Deposit

Occurrence • Diatomite

Ocean View Deposit

Prospect • Chromium

Moore Quarry

Past Producer • Stone, Crushed/Broken

Tip Top

Prospect • Chromium

Caen Quarry

Past Producer • Stone, Dimension

Williams Prospect

Prospect • Mercury

Porta Bros. Ranch Deposit

Occurrence • Chromium

New London Mine

Past Producer •

Outpost Nos. 1 & 2 Claims

Prospect • Chromium

Hearst Ranch-Red Rock Deposit

Past Producer •

Lowe, Porter, Et Al. Limestone Dep.

Occurrence • Limestone, General

Los Penascos Ranch Deposit

Occurrence • Diatomite

Hazzard Group

Unknown • Copper

Laflor Claim

Prospect • Chromium

West Norcross Mine

Past Producer •

Kaiser-Santa Margarita Pit

Producer • Stone, Crushed/Broken

Slash Bar G Ranch Pit

Producer • Sand and Gravel, Construction

Cypress Mountain Group

Prospect • Mercury

Unnamed Pumice Occurrence

Occurrence • Pumice

Kessler Onyx Deposit

Past Producer • Marble, Dimension

Gravel Pit

Past Producer • Sand and Gravel, Construction

Unnamed Deposit

Prospect • Sand and Gravel, Construction

Santa Clara Deposit

Prospect • Chromium

Unnamed Quarry

Past Producer • Stone, Crushed/Broken

Southview Prospect

Prospect • Mercury

Estrella Pit

Producer • Sand and Gravel, Construction

North Fork Willow Canyon Area

Prospect • Gold

Estrella Mine

Past Producer • Chromium

Pismo Heights Co.

Occurrence • Diatomite

Dubost Deposit

Prospect • Limestone, General

Navajo Creek Pit

Producer • Sand and Gravel, Construction

Chucker #3 Mine

Producer • Gypsum-Anhydrite

Ezra Carpenter Deposit

Occurrence • Marble, Dimension

Fenceline Quarry #8

Producer • Gypsum-Anhydrite

Little Bend Group

Prospect • Copper

Morro Rock Quarry

Producer • Stone, Crushed/Broken

Elizabeth and Winona Group

Unknown • Mercury

Florence Claim

Prospect • Copper

Guiton Molding Sand

Past Producer • Sand and Gravel, Construction

Navajo Mines

Prospect • Gold

Yoakum Tract

Prospect • Copper

Deposit

Occurrence • Barium-Barite

Unnamed Quarry

Past Producer • Stone, Crushed/Broken

Hamilton Mine

Past Producer • Mercury

Take A Chance Group

Unknown • Copper

Isom Prospect

Prospect •

Ridge Claim

Prospect • Copper

Dirtman Pit

Producer • Sand and Gravel, Construction

Parker Red Rock Pit

Producer • Stone, Crushed/Broken

William Tell Mine

Prospect • Mercury

Unnamed Quarry

Past Producer • Sand and Gravel, Construction

Unnamed Pits

Past Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Huasna River Pit

Producer • Sand and Gravel, Construction

Cypress Chrome Prospect

Prospect • Chromium

Fitzhugh Ranch Mine

Prospect • Mercury

O.S. Still Ranch Property

Past Producer • Gold

3 Bar 5 Ranch Pit

Producer • Stone, Dimension

Unnamed Quarry

Past Producer • Stone, Crushed/Broken

Evans Prospects

Prospect •

San Luis Brick Works, Inc.

Producer • Clay

Kiser Ranch Deposit

Occurrence • Magnesite

Gravel Pit

Past Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Unnamed Deposit

Prospect • Sand and Gravel, Construction

Prospects

Prospect • Mercury

Gravel Pit

Past Producer • Sand and Gravel, Construction

Land Red Rock Pit

Producer • Stone, Crushed/Broken

Gravel Pit

Past Producer • Sand and Gravel, Construction

A-34 Prospect

Prospect • Gold

Victory No. 3

Unknown • Chromium

Mckinney Iron Mines

Occurrence • Iron

Hangout Placer

Occurrence • Gold

Quien Sabe Mine

Prospect • Mercury

Navaho Sand Pit

Past Producer • Sand and Gravel, Construction

Jehovah Jireh Placer

Past Producer • Gold

Carrisa Mine

Past Producer • Gypsum-Anhydrite

Gravel Pit

Past Producer • Sand and Gravel, Construction

Sand Pits

Past Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Castro No. 2 Claim

Prospect • Chromium

Unnamed Mine

Prospect • Chromium

Deer Trail Mine

Past Producer • Mercury

Crown Point Claim

Prospect • Chromium

Kester Prospect

Occurrence • Manganese

Jitney Mine

Prospect • Chromium

Eucalyptus No. 2

Past Producer • Chromium

Alfred H. Ruedy Chrome

Prospect • Chromium

Buena Vista

Plant • Mercury

Red Rock Pit

Producer • Stone, Crushed/Broken

Warren Ranch Deposit

Prospect • Mercury

Mitchell Property

Occurrence • Uranium

Wolforth Quarry #1

Producer • Gypsum-Anhydrite

Hilltop Claim

Prospect • Chromium

Warren Prospect

Prospect • Mercury

Guerra Quarry

Producer • Stone, Crushed/Broken

Sand Pit

Past Producer • Sand and Gravel, Construction

Oro Fino

Past Producer • Gold

Gravel Pit

Past Producer • Sand and Gravel, Construction

Hill Prospect

Unknown • Manganese

San Simeon Creek Pits

Past Producer • Sand and Gravel, Construction

Ore Bag Claim

Prospect • Chromium

Caen Quarry

Past Producer • Stone, Crushed/Broken

Mountain Springs Quarry

Producer • Stone, Crushed/Broken

Rawhide Prospect

Past Producer • Chromium

Eagle Prospect

Prospect • Chromium

Eucalyptus No. 1 Claim

Prospect • Chromium

Soda Lake Deposit

Past Producer • Sodium

Maninni Nickel Property

Occurrence • Nickel

Little Almaden Mine

Prospect • Mercury

Gravel Pit

Past Producer • Sand and Gravel, Construction

Unnamed Pit

Past Producer • Sand and Gravel, Construction

Templeton Pit and Mill

Past Producer • Sand and Gravel, Construction

Unnamed Manganese Occurrence

Occurrence • Manganese

Schneider & Mccles Claim

Prospect • Copper

Alpha Claim

Prospect • Copper

Unnamed Location

Occurrence • Gypsum-Anhydrite

Reddin and Venezuela Prospect

Occurrence • Uranium

Sunrise No. 3

Prospect • Chromium

Barbara Jane Prospect

Occurrence • Uranium

Starlight Claim

Prospect • Chromium

Silver Swan

Past Producer • Copper

Zerfing Ranch Deposit

Past Producer • Chromium

Borrow Pit

Past Producer • Sand and Gravel, Construction

Gravel Pit

Past Producer • Sand and Gravel, Construction

Serrano Prospect

Prospect •

Gravel Pit

Past Producer • Sand and Gravel, Construction

Polar Star Mine

Producer • Mercury

La Primera

Past Producer • Chromium

Peppard Ranch Deposit

Occurrence • Chromium

Borrow Pit

Past Producer • Sand and Gravel, Construction

Sweetwater Chromite Mine

Past Producer • Chromium

Spring Creek Chrome

Prospect • Chromium

Gravel Pit

Past Producer • Sand and Gravel, Construction

Newsome Marl Deposit

Occurrence • Calcium

Lowe, Porter, Et Al. Limestone Dep.

Occurrence • Limestone, General

Whale Rock Pit

Producer • Stone, Crushed/Broken

Chromic Acid No. 2

Prospect • Chromium

Unnamed Diatomite Deposit

Occurrence • Diatomite

San Simeon Creek Pit & Mill

Past Producer • Sand and Gravel, Construction

The Incello Company

Occurrence • Diatomite

Beck Quarry #4

Producer • Gypsum-Anhydrite

Buckeye Mine

Prospect • Mercury

San Luis Obispo

Occurrence • Nickel

Cambria Pit

Producer • Stone, Crushed/Broken

Pioneer Transit Mix

Past Producer • Sand and Gravel, Construction

Unnamed Prospects

Prospect • Mercury

Gravel Pit

Past Producer • Sand and Gravel, Construction

Santa Maria Pit and Mill

Past Producer • Sand and Gravel, Construction

Oceano Sand Pit

Producer • Stone, Crushed/Broken

Unnamed Quarry

Past Producer • Stone

Fraser Canyon Prospect

Prospect • Uranium

Munari Salinas River Pit

Producer • Sand and Gravel, Construction

Big Bend Claim

Prospect • Copper

Colonel Claim

Past Producer • Chromium