| NMNorthfield Mundelein Plant | Mundelein | IL | — | ◇ UNVERIFIED |
| NRNorthgate Ready Mix | Windsor | CA | — | ◇ UNVERIFIED |
| NMNorth Marina Ameron Hulbert | Everett | WA | — | ◇ UNVERIFIED |
| NINorthwest Illinois Construction CO | Rock Falls | IL | — | ◇ UNVERIFIED |
| NCNorthwind Concrete Products CO | South Beloit | IL | — | ◇ UNVERIFIED |
| NCNorthwind Concrete Products CO | Posen | IL | — | ◇ UNVERIFIED |
 Norwalk Concrete Industries, INC. | Norwalk | OH | — | ◇ UNVERIFIED |
| NVNorwalk Vault CO. of Missouri INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| NCNova Crete, INC. | Fort Lee | NJ | — | ◇ UNVERIFIED |
| NANov Ameron | Anniston | AL | — | ◇ UNVERIFIED |
| NINucast Industries INC | Corona | CA | — | ◇ UNVERIFIED |
| NLNurazzo, LLC | Dalton | GA | — | ◇ UNVERIFIED |
| NCNW Concrete Vent Wells LLC | Gervais | OR | — | ◇ UNVERIFIED |
| OCOaks Concrete Products INC | Wixom | MI | — | ◇ UNVERIFIED |
| OLOberfield's LLC | Delaware | OH | — | ◇ UNVERIFIED |
| OGOcean Granite and Marble LLC | Little Egg Harbor Twp | NJ | — | ◇ UNVERIFIED |
| OCOgden Concrete Batch Plant G19 | Ogden | UT | — | ◇ UNVERIFIED |
| OOldcastle | Eugene | OR | — | ◇ UNVERIFIED |
| OOldcastle | Lebanon | PA | — | ◇ UNVERIFIED |
| OOldcastle | Keizer | OR | — | ◇ UNVERIFIED |
| OAOldcastle Apg South INC | Rockwood | TN | — | ◇ UNVERIFIED |
| OCOldcastle Coastal | Tampa | FL | — | ◇ UNVERIFIED |
| OCOldcastle Coastal, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| OEOldcastle Enclosure Solutions | Tracy | CA | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Romeoville | IL | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Acworth | GA | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Midway | FL | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Nampa | ID | — | ◇ UNVERIFIED |
 Oldcastle Infrastructure, INC - Fontana | Fontana | CA | — | ◇ UNVERIFIED |
| Oldcastle Infrastructure, INC. - Phoenix Oes | Phoenix | AZ | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure - Platteville | Loveland Area | CO | — | ◇ UNVERIFIED |
| ONOldcastle Nampa Madison | Nampa | ID | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Perris | CA | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Fontana | CA | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Elk River | MN | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Stone Mountain | GA | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Bartow | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Tualatin | OR | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Clackamas | OR | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. | Ontario | CA | — | ◇ UNVERIFIED |
| OSOldcastle Savannah | Guyton | GA | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group- Port Concrete Plant | Gunnison | CO | — | ◇ UNVERIFIED |
| OWOldcastle Westile, INC. | Littleton | CO | — | ◇ UNVERIFIED |
| OMOlympic Marble | Buena Park | CA | — | ◇ UNVERIFIED |
| OWOmaha Wilbert Vault, INC. | Omaha | NE | — | ◇ UNVERIFIED |
| OPOmega Products International, INC. | Commerce City | CO | — | ◇ UNVERIFIED |
| OPOmni Products, INC. | Lincolnton | NC | — | ◇ UNVERIFIED |
| OBOrco Blended Products INC | Highland | CA | — | ◇ UNVERIFIED |
| OROriginal Rock Replicas of Arizona, INC. | Tempe | AZ | — | ◇ UNVERIFIED |
| OCOrnamental Columns and Statues, INC. | Fort Myers | FL | — | ◇ UNVERIFIED |
| OSOrnamental Stone INC | Allyn | WA | — | ◇ UNVERIFIED |
| OAOwens and Son's Vault Company | Union Springs | AL | — | ◇ UNVERIFIED |
| PAPacific Aquascapes INC | Lanai City | HI | — | ◇ UNVERIFIED |
| PCPacific Cast Stone | Lincoln | NE | — | ◇ UNVERIFIED |
| PRPai Ready Mix LLC - Many Plant | Many | LA | — | ◇ UNVERIFIED |
| PBPalm Bay Plant | Palm Bay | FL | — | ◇ UNVERIFIED |
| PCPanhandle Concrete Products, INC. | Scottsbluff | NE | — | ◇ UNVERIFIED |
| PBParagon Building Products Incorporated | Henderson | NV | — | ◇ UNVERIFIED |
| PCParagon Casket INC | Richmond | IN | — | ◇ UNVERIFIED |
| PCParamount Concrete, INC. | Pompano Beach | FL | — | ◇ UNVERIFIED |
| PPParamount Precast Design INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| PIParexlahabra INC | French Camp | CA | — | ◇ UNVERIFIED |
| PPParker Precast, INC | Richmond Hill | GA | — | ◇ UNVERIFIED |
| PUPark USA San Antonio | San Antonio | TX | — | ◇ UNVERIFIED |
| PPPatriot Partners INC. | Westbrook | ME | — | ◇ UNVERIFIED |
| PVPatriot Vault & Precast | Park Hills | MO | — | ◇ UNVERIFIED |
| PSPaul's Silo Service, LLC | Stevens Point | WI | — | ◇ UNVERIFIED |
| PMPaw Materials, INC | Land O Lakes | FL | — | ◇ UNVERIFIED |
| PAPcr Aquisitions Dba Campania Intl Inc/quakertown | Quakertown | PA | — | ◇ UNVERIFIED |
| PEPeacock Enterprises INC. | Atmore | AL | — | ◇ UNVERIFIED |
| PPPeaks Precast LLC | Buena Vista | CO | — | ◇ UNVERIFIED |
| PTPebble Technology International | Scottsdale | AZ | — | ◇ UNVERIFIED |
| POPece of Mind Environmental - Concrete Crusher Yard | Orlando | FL | — | ◇ UNVERIFIED |
| PPPelkowski Precast CORP | Kings Park | NY | — | ◇ UNVERIFIED |
| PIPeopleready, INC. | Oxford | MA | — | ◇ UNVERIFIED |
| PPPerformance Plus Products LLC | Aliso Viejo | CA | — | ◇ UNVERIFIED |
| PFPeri Formwork Systems INC. | Elkridge | MD | — | ◇ UNVERIFIED |
| PTPersonal Touch Stone | Moss Point | MS | — | ◇ UNVERIFIED |
| PGPeters Gunite Materials | Modesto | CA | — | ◇ UNVERIFIED |
| PCPeterson Concrete Septic Tanks & Storm Shelters | Pottsville | AR | — | ◇ UNVERIFIED |
| PCPeterson Concrete Tank CO | Clinton | AR | — | ◇ UNVERIFIED |
| PBPetrillo Bros INC | Franklin | TN | — | ◇ UNVERIFIED |
| PFPgh Flexicore/donora Plt | Donora | PA | — | ◇ UNVERIFIED |
| PSPhilip Services Hawaii LTD | Kapolei | HI | — | ◇ UNVERIFIED |
| 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 |
| PTPlatinum Tools | Camarillo | CA | — | ◇ 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 |
| PCPre-cast Concrete Step Co., INC. | New Orleans | LA | — | ◇ UNVERIFIED |
