| AAccu-Glass | Saint Louis | 20–99 | ● ACTIVE |
 Mississippi Lime Company | Saint Louis | — | ● ACTIVE |
 Posie Pots and 3d Prints LLC | Saint Louis | — | ● ACTIVE |
| SLSt. Louis Diecasting | Bridgeton | — | ◇ UNVERIFIED |
| VMValley Material Company-valley Park | Valley Park | — | ◐ LIKELY ACTIVE |
| ARAmerican Ready Mix-gumbo | Chesterfield | — | ◐ LIKELY ACTIVE |
| BDBecton Dickinson & CO Accu-glass | Saint Louis | — | ◐ LIKELY ACTIVE |
| BMBreckenridge Material Company #3 | Chesterfield | — | ◐ LIKELY ACTIVE |
| BQBussen Quarries Incorporated | Saint Louis | — | ◐ LIKELY ACTIVE |
| CSCentral Stone Company Ft Belle Quarry Cs31 | Florissant | — | ◐ LIKELY ACTIVE |
| KBKirchner Block and Brick Bridgeton | Bridgeton | — | ◐ LIKELY ACTIVE |
| RBRaineri Building Materials-eureka | Eureka | — | ◐ LIKELY ACTIVE |
| KCKienstra Concrete (missouri Bottom Rd) | Bridgeton | — | ◐ LIKELY ACTIVE |
| QSQuikrete - St. Louis, Mo Plant | Valley Park | — | ◐ LIKELY ACTIVE |
| ARAmerican Ready Mix-fenton | Saint Louis | — | ◇ UNVERIFIED |
| BBBest Block - Bridgeton/st. Louis Mo Plant | Bridgeton | — | ◇ UNVERIFIED |
| BMBreckenridge Material Co-st Louis (plant 6) | Saint Louis | — | ◇ UNVERIFIED |
| CCCentaur Concrete Co-chesterfield | Chesterfield | — | ◇ UNVERIFIED |
| FSFive Star Concrete | Maryland Heights | — | ◇ UNVERIFIED |
| FWFred Weber - Concrete Plant 4 | Maryland Heights | — | ◇ UNVERIFIED |
| FWFred Weber Portable Plant #1 | Webster Groves | — | ◇ UNVERIFIED |
| GRGateway Ready Mix Inc-maryland Heights | Maryland Heights | — | ◇ UNVERIFIED |
| KMKienstra Materials CO LLC | Saint Louis | — | ◇ UNVERIFIED |
| KMKienstra Materials Company | Overland | — | ◇ UNVERIFIED |
| LRLandvatter Ready Mix-barrett Station Road | Saint Louis | — | ◇ UNVERIFIED |
| LRLandvatter Ready Mix Market | Saint Louis | — | ◇ UNVERIFIED |
| MMMetro Materials Concrete Batch Plant | Valley Park | — | ◇ UNVERIFIED |
| MMMetro Materials - Hanley Plant-kinloch | Kinloch | — | ◇ UNVERIFIED |
| MMMetro Materials (valley Park Plant)-fenton Supply Company | Valley Park | — | ◇ UNVERIFIED |
| MBMillstone Bangert Inc-chesterfield (mbi #6) | Chesterfield | — | ◇ UNVERIFIED |
| OBOzark Building Materials, LLC Plant 1 | Saint Louis | — | ◇ UNVERIFIED |
| RBRed Bird Pre-mix Company-bridgeton | Bridgeton | — | ◇ UNVERIFIED |
| RQRuprecht Quarry-paule Rd | Saint Louis | — | ◇ UNVERIFIED |
| WCWest Continental Auto Parts Company | Maryland Heights | — | ◇ UNVERIFIED |
| EMEastern Missouri Concrete LLC | Saint Louis | — | ◐ LIKELY ACTIVE |
| GTGolden Triangle | Wildwood | 20–99 | ◐ LIKELY ACTIVE |
| KKci | Bridgeton | 20–99 | ◐ LIKELY ACTIVE |
| RRbpm | Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| RRbrm | Overland | 20–99 | ◐ LIKELY ACTIVE |
| SMSTLB - Midwest Block | Bridgeton | 20–99 | ◐ LIKELY ACTIVE |
| SHSTLP2 - Hardscapes Southwest | Bridgeton | 20–99 | ◐ LIKELY ACTIVE |
| SQSTL Quikrete | Valley Park | 20–99 | ◐ LIKELY ACTIVE |
| SLStonetrends, L.l.c. | Chesterfield | — | ◇ UNVERIFIED |
| ARAlsey Refractories Company | Saint Louis | — | ◇ UNVERIFIED |
| BBBangert Brothers (millstone Bangert)-bussen Road Plant | Saint Louis | — | ◇ UNVERIFIED |
| BCBeco Concrete Company-new Baumgartner Road | Saint Louis | — | ◇ UNVERIFIED |
| BBBest Block - Bridgeton, Mo Plant [earth City] | Bridgeton | — | ◇ UNVERIFIED |
| BMBreckenridge Material Co-mattis Road Plant | Saint Louis | — | ◇ UNVERIFIED |
| CICustomcrete, Inc | Saint Louis | — | ◇ UNVERIFIED |
| GGGlobal Granite & Marble, LLC | St. Louis | — | ◇ UNVERIFIED |
