| OROzark Ready Mix - Versailles | Versailles | — | ◇ UNVERIFIED |
| OROzark Ready Mix - Waynesville | Saint Robert | — | ◇ UNVERIFIED |
| OROzark Ready Mix-waynesville | Waynesville | — | ◇ UNVERIFIED |
| PRPatriot Ready Mix, LLC | Farmington | — | ◇ UNVERIFIED |
| PVPatriot Vault & Precast | Park Hills | — | ◇ UNVERIFIED |
| PCPenny's Concrete | Grain Valley | — | ◇ UNVERIFIED |
| PRPolitte Ready Mix - Farmington | Farmington | — | ◇ UNVERIFIED |
| PDPorter Dewitt Ready Mix Co-south Plant | Poplar Bluff | — | ◇ UNVERIFIED |
 Productive Industries INC | Greenwood | — | ◇ UNVERIFIED |
| RHRCB Holdings of Missouri, LLC | Kansas City | — | ◇ UNVERIFIED |
| RMReady Mix Concrete | Perryville | — | ◇ UNVERIFIED |
| RSRe-sort Solutions | Fenton | — | ◇ UNVERIFIED |
| RBRichards Brick Company | Saint Louis | — | ◇ UNVERIFIED |
| RRRiley Ready Mix & Materials, INC. | Saint Louis | — | ◇ UNVERIFIED |
| RWRite Way Concrete Products CO | Springfield | — | ◇ UNVERIFIED |
| RMRobinson Memorials, INC. | Thayer | — | ◇ UNVERIFIED |
| RRRost Ready Mix | Springfield | — | ◇ UNVERIFIED |
| RRRost Ready Mix | Springfield | — | ◇ UNVERIFIED |
| SPSalem Plant | Salem | — | ◇ UNVERIFIED |
| SVSaline Vault Company INC. | Sweet Springs | — | ◇ UNVERIFIED |
| SRSchreiter Ready Mix | O Fallon | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Advance | Advance | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Cape Girardeau North | Cape Girardeau | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Cape Girardeau South | Cape Girardeau | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Dexter | Dexter | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Kennett | Kennett | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Marston Site | Marston | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Poplar Bluff North | Poplar Bluff | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Poplar Bluff South | Poplar Bluff | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Sikeston East | Sikeston | — | ◇ UNVERIFIED |
| SRSemo Ready Mix - Sikeston West | Sikeston | — | ◇ UNVERIFIED |
| SGShamrock Group Mexico Plant | Mexico | — | ◇ UNVERIFIED |
| SESharper Edge | Kansas City | — | ◇ UNVERIFIED |
| SShawnbateman | Marionville | — | ◇ UNVERIFIED |
| SFSi Funeral Services | Saint Joseph | — | ◇ UNVERIFIED |
| SGSignature Granite LLC | Neosho | — | ◇ UNVERIFIED |
| SSSolid Surface Designs INC | Billings | — | ◇ UNVERIFIED |
| SCSpray Com Utilities Inc.* | Knob Noster | — | ◇ UNVERIFIED |
| SRStar Ready Mix INC. | Poplar Bluff | — | ◇ UNVERIFIED |
| SGStatus Granite | Saint Louis | — | ◇ UNVERIFIED |
| SGSte Genevieve Ready Mix Concrete Inc-perryville Plant | Perryville | — | ◇ UNVERIFIED |
| SRStewart-morrison Redi-mix | West Plains | — | ◇ UNVERIFIED |
| SSStockman Stoneworks* | Jefferson City | — | ◇ UNVERIFIED |
| SIStoneland, INC. | Maryland Heights | — | ◇ UNVERIFIED |
| SISuhor Industries | Mountain Grove | — | ◇ UNVERIFIED |
| SISuhor Industries, INC. | Moberly | — | ◇ UNVERIFIED |
| SISuhor Industries, INC. | Saint Joseph | — | ◇ UNVERIFIED |
| TPTc Precast INC. | Troy | — | ◇ UNVERIFIED |
| TCTest Cedri No Subfac | Columbia | — | ◇ UNVERIFIED |
| TCThe Concrete Works Sweeney Mining & Mfg. Co LLC | Wasola | — | ◇ UNVERIFIED |
