| WWWalters Wolf Precast | Fremont | CA | Nonmetallic Mineral Product Manufacturing327332 | — | ◐ LIKELY ACTIVE |
| AAA a Concrete Supply | Yuba City | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| AAA & a Concrete Supply INC | Tracy | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ACA&a Concrete Supply INC Chico Plant | Chico | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| ACAdams & Chittenden Scientific Glass Coop | Berkeley | CA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| AEAero Engines INC | Los Angeles | CA | Nonmetallic Mineral Product Manufacturing327122 | — | ◇ UNVERIFIED |
| AGAgc Glass-2008 | Victorville | CA | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| APAmeron Pipe Group | Tracy | CA | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| ASAmeron Steel Fabrication Division | Fontana | CA | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| ALAndrew Lauren Surfaces | Santa Fe Springs | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| ABAngelus Block CO INC | Fontana | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAngelus Block CO INC | Sun Valley | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAngelus Block Company | Oxnard | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| AIAnnieglass INC | Watsonville | CA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| ALArdex LP | Stockton | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| ARAssociated Ready Mixed Concrete | San Diego | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| ARAssociated Ready Mixed Concrete | Fountain Valley | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ABAtkinson Brick CO | Perris | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ABAtkinson Brick Company | Los Angeles | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| AGAvalon Glass & Mirror CO | Carson | CA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| BBBasalite Block | Tracy | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BRBender Ready Mix INC | Santa Fe Springs | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BRBerkeley Ready Mix Concrete | Berkeley | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BPBertelson Precast CORP | Modesto | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| BWBest Way Marble & Tile CO INC | Los Angeles | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CMCalaveras Materials INC | Tracy | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CMCalaveras Materials INC | Lathrop | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CMCalaveras Materials INC | Turlock | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CSCalifornia State University at Los Angeles | Los Angeles | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CCCalportland Company | National City | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCalportland Company Lax Plant | Los Angeles | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCalportland CO Santa Maria Plant | Santa Maria | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCalstone Company | San Martin | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CGCalstone Gilroy-oldcastle Apg | Gilroy | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CSCal St Univ Northridge | Northridge | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CCCardinal Cg | Moreno Valley | CA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| CCCardinal Cg | Galt | CA | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| CCCastaic Clay Manufacturing Company Incorporated | Castaic | CA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CPCatalina Pacific Concrete CO Sun Valley Plant | Sun Valley | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CPCatalinia Pacific Concrete CO San Juan Plant | San Juan Capistrano | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCementpro | Ontario | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CACemex Antioch | Antioch | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCemex Concord | Concord | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Amador Plant | San Francisco | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials L P | Corona | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials L P | Perris | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Pacific LLC | West Hollywood | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Pacific LLC | Bakersfield | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Pacific LLC | Bell | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCemex Construction Materials Pacific LLC | Fairfield | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
