| PSPrestress Systems | Fort Myers | FL | — | ◇ UNVERIFIED |
| PBPrice Brothers Company | Perryman | MD | — | ◇ UNVERIFIED |
| PSProject Staffing, INC. | Topsham | ME | — | ◇ UNVERIFIED |
| PIPro-mix INC. / Structural Prestressed Industries | Medley | FL | — | ◇ UNVERIFIED |
| PIProplants, INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| PTPro Tec International | Osprey | FL | — | ◇ UNVERIFIED |
| PSProvia Stone LLC | Sugarcreek | OH | — | ◇ UNVERIFIED |
| PPP&s Paving, INC. | Daytona Beach | FL | — | ◇ UNVERIFIED |
| PLPulsar, LLC | La Vergne | TN | — | ◇ UNVERIFIED |
| PIPyramid Industries LLC | Kihei | HI | — | ◇ UNVERIFIED |
| PPPyramid Precast INC | Rialto | CA | — | ◇ UNVERIFIED |
| QCQuad Cities Concrete Products, LLC | Milan | IL | — | ◇ UNVERIFIED |
| QPQuality Precast Solutions, LLC | Fort Myers | FL | — | ◇ UNVERIFIED |
| QSQuality Stone Veneer, INC. | Refton | PA | — | ◇ UNVERIFIED |
| QSQuality Stone Veneer, INC. | Tower City | PA | — | ◇ UNVERIFIED |
| QSQuality Stone Veneer, INC. | Benson | NC | — | ◇ UNVERIFIED |
| QVQuality Vaults & Monuments, INC. | Ocoee | FL | — | ◇ UNVERIFIED |
| QWQuality Way Products | Holly | MI | — | ◇ UNVERIFIED |
| QVQualty Vaults & Monuments, INC. | Ocoee | FL | — | ◇ UNVERIFIED |
| QQuikrete | Lackawanna | NY | — | ◇ UNVERIFIED |
| QBQuikrete Birmingham, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| QQuikrete-chicago | Elburn | IL | — | ◇ UNVERIFIED |
| QCQuikrete - Connecticut INC. | Wauregan | CT | — | ◇ UNVERIFIED |
| QIQuikrete International INC. | Miami | FL | — | ◇ UNVERIFIED |
| QKQuikrete - Kentucky | Louisville | KY | — | ◇ UNVERIFIED |
| QNQuikrete Northern California | Fremont | CA | — | ◇ UNVERIFIED |
| QWQuikrete Wisconsin INC | Sussex | WI | — | ◇ UNVERIFIED |
| QWQuincy Wilbert Vault CO | Quincy | IL | — | ◇ UNVERIFIED |
| QBQuintal Burial Vaults, INC | Dighton | MA | — | ◇ UNVERIFIED |
| RPRabers Precast Products | Cambridge | OH | — | ◇ UNVERIFIED |
| RURail.one USA CORP. | Clinton | IA | — | ◇ UNVERIFIED |
| RCRas Concrete Construction, INC. | Naples | FL | — | ◇ UNVERIFIED |
| RLRcss Llc, Dba Redondo Manufacturing | San Antonio | TX | — | ◇ UNVERIFIED |
| RMReady Mix Usa,llc | Birmingham | AL | — | ◇ UNVERIFIED |
| RSRedbay Sand Company INC | Ponce De Leon | FL | — | ◇ UNVERIFIED |
| RMRedondo Manufacturing | San Antonio | TX | — | ◇ UNVERIFIED |
| RVRedwood Valley Gravel Product INC | Redwood Valley | CA | — | ◇ UNVERIFIED |
| RAReliable Asphalt Corporation | Chicago | IL | — | ◇ UNVERIFIED |
| RCReliable Concrete Products and Ornamental Iron, INC. | Kansas City | KS | — | ◇ UNVERIFIED |
| RPRev's Pre-Cast Concrete Corp. | Waukesha | WI | — | ◇ UNVERIFIED |
| RVRex Vault and Mausoleum Services, INC. | Newton | IL | — | ◇ UNVERIFIED |
| RVRex Vault & Mausoleum Service INC | Newton | IL | — | ◇ UNVERIFIED |
| RCRialto Concrete Products, INC. | Palmdale | CA | — | ◇ UNVERIFIED |
 Richards-wilbert INC - Roanoke Valley | Salem | VA | — | ◇ UNVERIFIED |
| RSRichey Services, LLC | Grove | OK | — | ◇ UNVERIFIED |
| RERichwood Equipment Company LLC | Springfield | OH | — | ◇ UNVERIFIED |
| RMRidge Mfg CORP | Rockaway | NJ | — | ◇ UNVERIFIED |
| RRRiley Ready Mix & Materials, INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| RIRinker Indianapolis Pipe | Indianapolis | IN | — | ◇ UNVERIFIED |
| RMRinker Materials Corporation | Mount Holly | NC | — | ◇ UNVERIFIED |
