| NANorth American Pipe & Precast | Courtland | MN | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NANorth American Precast Company | Houston | TX | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NANortheast Architectural Products INC. | Archbald | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NONortheast Ohio Precast LLC | Salem | OH | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NPNortheast Prestressed Products, LLC | Brogue | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NPNortheast Prestressed Products, LLC. | Pottsville | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NVNorwalk Vault CO. of Missouri INC. | Saint Louis | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NCNova Crete, INC. | Fort Lee | NJ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NINucast Industries INC | Corona | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NLNurazzo, LLC | Dalton | GA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NCNW Concrete Vent Wells LLC | Gervais | OR | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OCOaks Concrete Products INC | Wixom | MI | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OLOberfield's LLC | Delaware | OH | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OGOcean Granite and Marble LLC | Little Egg Harbor Twp | NJ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OOldcastle | Keizer | OR | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OOldcastle | Lebanon | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OOldcastle | Eugene | OR | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OAOldcastle Apg South INC | Rockwood | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOldcastle Coastal | Tampa | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OEOldcastle Enclosure Solutions | Tracy | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Nampa | ID | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Midway | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Romeoville | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
 Oldcastle Infrastructure, INC. - Phoenix Oes | Phoenix | AZ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure - Platteville | Loveland Area | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| ONOldcastle Nampa Madison | Nampa | ID | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Perris | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Elk River | MN | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. | Ontario | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OSOldcastle Savannah | Guyton | GA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OWOldcastle Westile, INC. | Littleton | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OMOlympic Marble | Buena Park | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OWOmaha Wilbert Vault, INC. | Omaha | NE | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OBOrco Blended Products INC | Highland | CA | Nonmetallic Mineral Product Manufacturing327125 | — | ◇ UNVERIFIED |
| OROriginal Rock Replicas of Arizona, INC. | Tempe | AZ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OCOrnamental Columns and Statues, INC. | Fort Myers | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OSOrnamental Stone INC | Allyn | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| OAOwens and Son's Vault Company | Union Springs | AL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PAPacific Aquascapes INC | Lanai City | HI | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PBPalm Bay Plant | Palm Bay | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PCPanhandle Concrete Products, INC. | Scottsbluff | NE | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PBParagon Building Products Incorporated | Henderson | NV | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PCParamount Concrete, INC. | Pompano Beach | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PIParexlahabra INC | French Camp | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PPParker Precast, INC | Richmond Hill | GA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PUPark USA San Antonio | San Antonio | TX | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PPPatriot Partners INC. | Westbrook | ME | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PVPatriot Vault & Precast | Park Hills | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PSPaul's Silo Service, LLC | Stevens Point | WI | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PEPeacock Enterprises INC. | Atmore | AL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
