| NBNarvick Brothers Lumber CO INC | Minooka | IL | — | ◐ LIKELY ACTIVE |
| NRNashville Ready Mix, INC. | Nashville | TN | — | ◐ LIKELY ACTIVE |
| NRNashville Ready Mix, INC. | Nashville | TN | — | ◐ LIKELY ACTIVE |
| NRNashville Ready Mix, INC. | Nashville | TN | — | ◐ LIKELY ACTIVE |
| NRNashville Ready Mix of Murfreesboro | Murfreesboro | TN | — | ◐ LIKELY ACTIVE |
| NBNational Block Company INC | Westland | MI | — | ◐ LIKELY ACTIVE |
| NCNational City Ready Mix | National City | CA | 20–99 | ◐ LIKELY ACTIVE |
| NFNatl Fuel Gas Supply/ellisburg Sta | Ellisburg | PA | — | ◐ LIKELY ACTIVE |
| NCNatural Concrete Products LLC | Norfolk | NE | — | ◐ LIKELY ACTIVE |
| NINebco INC. Dba Overland Ready Mix Belleville Ks. Plant | Belleville | KS | — | ◐ LIKELY ACTIVE |
| NCNeo Concrete & Materials, INC. | Grove | OK | — | ◐ LIKELY ACTIVE |
| NNewark | Newark | NJ | 100–499 | ◐ LIKELY ACTIVE |
| NBNew Boston Concrete, INC. | New Boston | TX | — | ◐ LIKELY ACTIVE |
| NCNitterhouse Concrete Prod | Chambersburg | PA | — | ◐ LIKELY ACTIVE |
| NNoblesville | Noblesville | IN | 20–99 | ◐ LIKELY ACTIVE |
| NRNorfolk Rmc Facility | Norfolk | VA | — | ◐ LIKELY ACTIVE |
| NSNorfolk Southern Railway | Spartanburg | SC | — | ◐ LIKELY ACTIVE |
| NLNorth Lamar Concrete INC | Sumrall | MS | — | ◐ LIKELY ACTIVE |
| NGNWPX Geneva - Orem | Orem | UT | 100–499 | ◐ LIKELY ACTIVE |
| OROhio River Concrete CORP | Marion | KY | — | ◐ LIKELY ACTIVE |
| OCOk Concrete Company | Wichita Falls | TX | 20–99 | ◐ LIKELY ACTIVE |
| OCOld Castle Apg | Riverhead | NY | — | ◐ LIKELY ACTIVE |
| OAOldcastle Apg South, INC. | Franklin | TN | — | ◐ LIKELY ACTIVE |
| OBOldcastle Building Envelope | Fremont | CA | 100–499 | ◐ LIKELY ACTIVE |
| OCOldcastle Coastal INC | Fort Myers | FL | — | ◐ LIKELY ACTIVE |
| OPOldcastle Precast INC | South Bethlehem | NY | — | ◐ LIKELY ACTIVE |
| OSOldcastle Sw Group - Anderson Rmc | Delta | CO | — | ◐ LIKELY ACTIVE |
| OSOldcastle Sw Group - Rifle Rmc Plant | Rifle | CO | — | ◐ LIKELY ACTIVE |
| OUOldcastle United Comp of Mesa County | Rifle | CO | — | ◐ LIKELY ACTIVE |
| OOntario | Ontario | CA | 100–499 | ◐ LIKELY ACTIVE |
| OROtsego Ready Mix | Oneonta | NY | 20–99 | ◐ LIKELY ACTIVE |
| OBOverman Buildings INC | Pocahontas | AR | 20–99 | ◐ LIKELY ACTIVE |
| OCOwensboro Concrete CO | Owensboro | KY | — | ◐ LIKELY ACTIVE |
| OSOxford Sand Company Inc, Pontotoc Plant | Pontotoc | MS | — | ◐ LIKELY ACTIVE |
| OROzark Ready Mix - Lee's Summit | Lake Lotawana | MO | — | ◐ LIKELY ACTIVE |
| PPPackage Pavement | Ravena | NY | 20–99 | ◐ LIKELY ACTIVE |
| PMPAHB - Midwest Block | Paducah | KY | 1–19 | ◐ LIKELY ACTIVE |
| PMPaw Materials, INC. | Odessa | FL | — | ◐ LIKELY ACTIVE |
| PJPenn Jersey Building Materials | Egg Harbor Township | NJ | 20–99 | ◐ LIKELY ACTIVE |
| PCPenny's Concrete Higginsville | Higginsville | MO | — | ◐ LIKELY ACTIVE |
| PCPennys Concrete INC | Lawrence | KS | — | ◐ LIKELY ACTIVE |
| PCPenny's Concrete Plant #41 - Carrollton | Carrollton | MO | — | ◐ LIKELY ACTIVE |
| PMPenny's - Mcneilus Batchmaster 12-gardner (portable)(air) | New Century | KS | — | ◐ LIKELY ACTIVE |
| PRPenny's - Rex Model S-gardner Wet (portable)(air) | Portable | KS | — | ◐ LIKELY ACTIVE |
| PPPer Properties | Portsmouth | VA | — | ◐ LIKELY ACTIVE |
| PPPhoenix Precast Products | Concord | NH | 20–99 | ◐ LIKELY ACTIVE |
| PBPine Belt Ready Mix Concrete INC | Collins | MS | — | ◐ LIKELY ACTIVE |
| PCPlatte County Ready Mix-platte County Ready Mix | Platte City | MO | — | ◐ LIKELY ACTIVE |
| PVPleasant Valley | Pleasant Valley | NY | 20–99 | ◐ LIKELY ACTIVE |
| PCPlt Concrete Services | Rocky Mount | NC | — | ◐ LIKELY ACTIVE |
| PUPolimix Usa, Llc, Medley Plant | Medley | FL | — | ◐ LIKELY ACTIVE |
| PRPolitte Ready Mix - Bonne Terre Site | Bonne Terre | MO | — | ◐ LIKELY ACTIVE |
| PCPort City Concrete- Harleyville | Harleyville | SC | 20–99 | ◐ LIKELY ACTIVE |
| PCPort City Concrete- Pace | North Charleston | SC | 1–19 | ◐ LIKELY ACTIVE |
| PCPrairie Contractors LLC - Lafayette Hot Mix Asphalt Plant | Lafayette | LA | — | ◐ LIKELY ACTIVE |
| PCPrecast Concrete LLC | Fife | WA | 20–99 | ◐ LIKELY ACTIVE |
| POPrecast of Maine | Topsham | ME | 20–99 | ◐ LIKELY ACTIVE |
| PTPrecast Terrazzo Enterprises INC | Raleigh | NC | 20–99 | ◐ LIKELY ACTIVE |
| PMPreferred Materials INC - Golden Gate Ready Mix Plant | Naples | FL | — | ◐ LIKELY ACTIVE |
| PMPreferred Materials, Inc.- Immokalee | Immokalee | FL | — | ◐ LIKELY ACTIVE |
| PCPrestige Concrete Products | Hernando | FL | — | ◐ LIKELY ACTIVE |
| PCPrestressed Concrete Construction, LLC | Newton | KS | 20–99 | ◐ LIKELY ACTIVE |
| PSPrestress Services Industries Decatur | Decatur | IN | 20–99 | ◐ LIKELY ACTIVE |
| PGProject Goldeneye | Bay Minette | AL | — | ◐ LIKELY ACTIVE |
| PIPump-crete, Inc., Pine Road Facility | Auburndale | FL | — | ◐ LIKELY ACTIVE |
| PCPyles Concrete INC - Casey Plant | Liberty | KY | — | ◐ LIKELY ACTIVE |
| QSQuality Stone & Ready Mix-quarry | Shepherdsville | KY | — | ◐ LIKELY ACTIVE |
| QCQuikrete CO Inc/harrisburg Plt | Paxinos | PA | — | ◐ LIKELY ACTIVE |
| QCQuikrete Companies LLC / Quikrete Tulsa 13th St | Tulsa | OK | — | ◐ LIKELY ACTIVE |
| QBQuikrete-concrete Bagging Plant | Denver | CO | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials LLC - Chesapeake Cement Terminal | Chesapeake | VA | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - Green Bay Ready Mix | Davenport | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - San Antonio Facility | San Antonio | FL | — | ◐ LIKELY ACTIVE |
| QPQuikrete Proposed Storage Yard Site Improvements | Bowman | SC | — | ◐ LIKELY ACTIVE |
| RORail One USA CORP | Clinton | IA | 1–19 | ◐ LIKELY ACTIVE |
| RCRalph Clayton & Sons Clayton Tinton Falls Plant | Tinton Falls | NJ | — | ◐ LIKELY ACTIVE |
| RRRamsey Rmx, Minneapolis Rmx, St Paul Rmx | Minneapolis | MN | — | ◐ LIKELY ACTIVE |
| RRRancho Ready Mix Products, L.P Lake Elsinore | Colton | CA | 1–19 | ◐ LIKELY ACTIVE |
| RCRc Concrete | Burgettstown | PA | — | ◐ LIKELY ACTIVE |
| RMReady Mix Concrete, INC. | Fredericktown | MO | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Company - Old Stage Road | Chester | VA | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete CO - Plant 1 | Denver | CO | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA LLC. | Dallas | GA | — | ◐ LIKELY ACTIVE |
| RMReady Mix Usa, LLC - Bay Minette | Bay Minette | AL | — | ◐ LIKELY ACTIVE |
| RMReady Mix Usa, LLC Dba Boones Creek Concrete Plant | Johnson City | TN | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA Llc- Jasper Block Plant | Jasper | AL | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA - Racetrack Road Plant | Fort Walton Beach | FL | — | ◐ LIKELY ACTIVE |
| RRRealco Recycling CO. INC. | Jacksonville | FL | — | ◐ LIKELY ACTIVE |
| RERed E Mix LLC | Troy | IL | — | ◐ LIKELY ACTIVE |
| RERed E Mix LLC | Highland | IL | — | ◐ LIKELY ACTIVE |
| RFRedwood Falls Ready Mix | Redwood Falls | MN | 1–19 | ◐ LIKELY ACTIVE |
| RCReis Concrete Products INC | Falmouth | KY | — | ◐ LIKELY ACTIVE |
| RPR.e. Pierson Materials Vineland Concrete | Vineland | NJ | — | ◐ LIKELY ACTIVE |
Richards-wilbert INC - Roanoke Valley | Salem | VA | — | ◐ LIKELY ACTIVE |
| RMRinker Materials Concrete Pipe Division | Whitestown | IN | — | ◐ LIKELY ACTIVE |
| RMRinker Materials - Grand Junction | Grand Junction | CO | — | ◐ LIKELY ACTIVE |
| RCRiver City Concrete, INC. - Savannah | Savannah | TN | — | ◐ LIKELY ACTIVE |
| RCRiverside Const Materials/bristol Twp | Bristol | PA | — | ◐ LIKELY ACTIVE |
| RCRmc Carolina Materials Incorporated | Stokesdale | NC | — | ◐ LIKELY ACTIVE |
| RBRoanoke Block - Plant 716 | Roanoke | VA | — | ◐ LIKELY ACTIVE |