 Nelson Precast Products, LLC | Towson | MD | — | ◇ UNVERIFIED |
| NCNeosho Concrete Products Company | Neosho | MO | — | ◇ UNVERIFIED |
| NBNew Bethlehem Burial Services, INC. | New Bethlehem | PA | — | ◇ UNVERIFIED |
| NPNewcastle Precast LLC | Portland | OR | — | ◇ UNVERIFIED |
| NENew Erie Bella Vista | Hiwasse | AR | — | ◇ UNVERIFIED |
| NSNewman & Sons INC. | Bloomington | CA | — | ◇ UNVERIFIED |
| NINewoods, INC. | Little Rock | AR | — | ◇ UNVERIFIED |
| NINicmar Industries INC Dba George R Roberts Company | Alfred | ME | — | ◇ UNVERIFIED |
| NCNitterhouse Concrete Precast Plt | Chambersburg | PA | — | ◇ UNVERIFIED |
| NANorth American Pipe & Precast | Courtland | MN | — | ◇ UNVERIFIED |
| NANorth American Precast Company | Houston | TX | — | ◇ UNVERIFIED |
| NANortheast Architectural Products INC. | Archbald | PA | — | ◇ UNVERIFIED |
| NONortheast Ohio Precast LLC | Salem | OH | — | ◇ UNVERIFIED |
| NPNortheast Prestressed Products, LLC | Brogue | PA | — | ◇ UNVERIFIED |
| NPNortheast Prestressed Products, LLC. | Pottsville | PA | — | ◇ UNVERIFIED |
| NINorthern Il Wilbert Vault CO INC | Belvidere | IL | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Channahon | IL | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Forest View | IL | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Mundelein | IL | — | ◇ UNVERIFIED |
| NBNorthfield Block CO | Joliet | IL | — | ◇ UNVERIFIED |
| NBNorthfield Block Company | Indianapolis | IN | — | ◇ UNVERIFIED |
| NBNorthfield Block Company | Elgin | IL | — | ◇ UNVERIFIED |
| NBNorthfield Block INC | Romeoville | IL | — | ◇ UNVERIFIED |
| 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 | Posen | IL | — | ◇ UNVERIFIED |
| NCNorthwind Concrete Products CO | South Beloit | 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 |
| ODOberfields - Delaware, Oh Masonry Plant | Delaware | OH | — | ◇ UNVERIFIED |
| OLOberfield's LLC | Delaware | OH | — | ◇ UNVERIFIED |
| OGOcean Granite and Marble LLC | Little Egg Harbor Twp | NJ | — | ◇ UNVERIFIED |
| OCOdum Concrete Products INC | West Frankfort | IL | — | ◇ UNVERIFIED |
| OCOgden Concrete Batch Plant G19 | Ogden | UT | — | ◇ UNVERIFIED |
| OOldcastle | Lebanon | PA | — | ◇ UNVERIFIED |
| OOldcastle | Keizer | OR | — | ◇ UNVERIFIED |
| OOldcastle | Eugene | OR | — | ◇ UNVERIFIED |
| OAOldcastle Apg - Loveland | Loveland | CO | — | ◇ UNVERIFIED |
| OAOldcastle Apg Natl I/emigsville | Emigsville | PA | — | ◇ UNVERIFIED |
| OAOldcastle Apg New England | Holbrook | MA | — | ◇ UNVERIFIED |
| OAOldcastle Apg Northeast INC. | Fishers | NY | — | ◇ UNVERIFIED |
| OAOldcastle Apg Northeast, INC. | Odenton | MD | — | ◇ UNVERIFIED |
