| PPPhoenix Precast Products, Inc. | Phoenix | AZ | — | ◇ UNVERIFIED |
| PRPhoenix Recycling | Ashland | VA | — | ◇ UNVERIFIED |
| PRPioneer Roofing Tile INC | Fontana | CA | — | ◇ UNVERIFIED |
| PWPitsch Wrecking CO. - Concrete Recycling Plant | Walker | MI | — | ◇ UNVERIFIED |
| PCPitt Concrete Products INC | Trinity | AL | — | ◇ UNVERIFIED |
| PVPlatte Valley Precast, INC. | Columbus | NE | — | ◇ UNVERIFIED |
| PCPlum Creek Precast Company | Littleton | CO | — | ◇ UNVERIFIED |
| PUPlycem USA LLC - Allura (roaring River Facility) | North Wilkesboro | NC | — | ◇ UNVERIFIED |
| PGPly Gem Industries, INC. | Middleburg | PA | — | ◇ UNVERIFIED |
| PGPly Gem Speciality Products LLC | Olathe | KS | — | ◇ UNVERIFIED |
| PMPnb Manufacturing, INC. | High Point | NC | — | ◇ UNVERIFIED |
| PCPomeroy Corporation | Perris | CA | — | ◇ UNVERIFIED |
| PPPompili Precast Concrete | Cleveland | OH | — | ◇ UNVERIFIED |
| PCPope Concrete Products, INC. | Waycross | GA | — | ◇ UNVERIFIED |
| PMPort Manatee Grinding Plant | Palmetto | FL | — | ◇ UNVERIFIED |
| PPozzolanic | Denver | CO | — | ◇ UNVERIFIED |
| PIPozzolanic Intl | Denver | CO | — | ◇ UNVERIFIED |
| PCPre-cast Concrete Step Co., INC. | New Orleans | LA | — | ◇ UNVERIFIED |
| PIPrecast Incorporated | Honolulu | HI | — | ◇ UNVERIFIED |
| PSPre-cast Specialties, LLC | Fort Pierce | FL | — | ◇ UNVERIFIED |
| PPPrecision Packaging INC | Jackson | MS | — | ◇ UNVERIFIED |
| PPPrecision Precast Concrete Corp | Arverne | NY | — | ◇ UNVERIFIED |
| PCPrecon Corporation | Panama City | FL | — | ◇ UNVERIFIED |
| PPPrecon Properties | Tampa | FL | — | ◇ UNVERIFIED |
| PSPrestressed Slabs INC | East Saint Louis | IL | — | ◇ UNVERIFIED |
| PEPrestress Engineering CO | Blackstone | IL | — | ◇ UNVERIFIED |
| PSPrestress Services Industries of Tn, LLC | Memphis | TN | — | ◇ UNVERIFIED |
| PSPrestress Services - Kalamazoo | Kalamazoo | MI | — | ◇ UNVERIFIED |
| PSPrestress Systems | Fort Myers | FL | — | ◇ UNVERIFIED |
| PSProject Staffing, INC. | Topsham | ME | — | ◇ UNVERIFIED |
| PMPrometheus Materials INC | Longmont | CO | — | ◇ 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 |
| PSP&s Scaffolding Services Incorp. | Apple Valley | CA | — | ◇ 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. | Benson | NC | — | ◇ UNVERIFIED |
| QSQuality Stone Veneer, INC. | Refton | PA | — | ◇ UNVERIFIED |
| QSQuality Stone Veneer, INC. | Tower City | PA | — | ◇ 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 |
| QKQuikrete - Kentucky | Louisville | KY | — | ◇ 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 |
| RRctl | El Paso | TX | — | ◇ UNVERIFIED |
| RMReady Mix USA INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| RMReady Mix Usa,llc | Birmingham | AL | — | ◇ UNVERIFIED |
| RSRedbay Sand Company INC | Ponce De Leon | FL | — | ◇ UNVERIFIED |
| RMRedondo Manufacturing | San Antonio | TX | — | ◇ UNVERIFIED |
| RRRed Rock Transportation, L.c. | Cannonville | UT | — | ◇ 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 Hydro Conduit | Denver | CO | — | ◇ UNVERIFIED |
| RCRiver Cement-river Cement | Saint Louis | MO | — | ◇ UNVERIFIED |
| RCRiver Cement Sales CO. Dba Buzzi Unicem | Nashville | TN | — | ◇ UNVERIFIED |
| RCRiver Cement Sales Company | Atlanta | GA | — | ◇ UNVERIFIED |
| RCRiverside Cement CO | Riverside | CA | — | ◇ UNVERIFIED |
| RCRiverton Corporation | Front Royal | VA | — | ◇ UNVERIFIED |
| RSRiviera Stoneworks, INC. | Foley | AL | — | ◇ UNVERIFIED |
| RSRj Staab Stone Company of Florida, LLC | Gainesville | FL | — | ◇ UNVERIFIED |
| RPRmc Pacific Materials (dba Cemex) | Davenport | CA | — | ◇ UNVERIFIED |
| RPRmc Pacific Materials LLC Dba Cemex | Redwood City | CA | — | ◇ UNVERIFIED |
| RPRmr Products INC | Pacoima | CA | — | ◇ UNVERIFIED |
| RCRoanoke Cement Company | Richmond | VA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix | Paramount | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix INC | San Jacinto | CA | — | ◇ UNVERIFIED |
| RRRobertson's Ready Mix, Ltd, a California Limited Partnership | Pico Rivera | CA | — | ◇ UNVERIFIED |
| RVRoberts Vault Company, INC. | Dade City | FL | — | ◇ UNVERIFIED |
| RHRock Hill Concrete LLC | Dayton | WA | — | ◇ UNVERIFIED |
| RCRock-tred CORP | Skokie | IL | — | ◇ UNVERIFIED |
| RMRocky Mountain Precast, LLC | Yigo | GU | — | ◇ UNVERIFIED |
| RMRocky Mountain Prestress | Greeley | CO | — | ◇ UNVERIFIED |
| RMRocky Mountain Prestress LLC (structural Plant) | Denver | CO | — | ◇ UNVERIFIED |
