| NINebco, INC. Dba-kearney Crete and Block CO. | Kearney | NE | — | ◇ UNVERIFIED |
| NVNebraska Vault INC | Columbus | NE | — | ◇ UNVERIFIED |
| NPNedrow Plant | Nedrow | NY | — | ◇ UNVERIFIED |
| NCNeosho Concrete Products Inc-neosho Concrete Products INC | Neosho | MO | — | ◇ UNVERIFIED |
| NSNettleton Shipyard | Chauvin | LA | — | ◇ UNVERIFIED |
| NRNevada Ready Mix Lone Mountain | Las Vegas | NV | — | ◇ UNVERIFIED |
| NCNew Canton Concrete | New Canton | VA | — | ◇ UNVERIFIED |
| NCNewcastle Concrete Batch Plant | Newcastle | WY | — | ◇ UNVERIFIED |
| NDNew Deal Deicing - Denver Plant | Denver | CO | — | ◇ UNVERIFIED |
| NCNewington Concrete | Mitchells | VA | — | ◇ UNVERIFIED |
| NJNew Jersey Fireworks | Elkton | MD | — | ◇ UNVERIFIED |
| NLNew Life Solutions, LLC | Ashland | VA | — | ◇ UNVERIFIED |
| NMNewmont Mining CORP - Phoenix Mine | Battle Mountain | NV | — | ◇ UNVERIFIED |
| NONew Orleans Airport Ready Mix | Kenner | LA | — | ◇ UNVERIFIED |
| NLNex-gen LLC | Chavies | KY | — | ◇ UNVERIFIED |
| NSNext-gen Supply Group INC | Mansfield | MA | — | ◇ UNVERIFIED |
| NLNhmf, LLC | Columbus | OH | — | ◇ UNVERIFIED |
| NPNiche Polymer LLC | Ravenswood | WV | — | ◇ UNVERIFIED |
| NRNicolia Ready Mix | Shirley | NY | — | ◇ UNVERIFIED |
| NPNips Pre-cast | Spring Hill | KS | — | ◇ UNVERIFIED |
| NPNissan Plant 10 | Smyrna | TN | — | ◇ UNVERIFIED |
| NCNitterhouse Concrete Precast Plt | Chambersburg | PA | — | ◇ UNVERIFIED |
| NRNor-cal Rock INC | Hayward | CA | — | ◇ UNVERIFIED |
| NANorth Alabama Concrete, INC. | Jasper | AL | — | ◇ UNVERIFIED |
| NANorth American Salt CO | Chicago | IL | — | ◇ UNVERIFIED |
| NBNorth Birmingham Plant | Birmingham | AL | — | ◇ UNVERIFIED |
| NBNorth Broadway Batch Plant | Oklahoma City | OK | — | ◇ UNVERIFIED |
| NCNortheast Concrete Products CORP. | Plainville | MA | — | ◇ UNVERIFIED |
| NRNortheastern Ready Mix INC | Elizabeth City | NC | — | ◇ UNVERIFIED |
| NNNortheast Nanticoke Facility | Nanticoke | PA | — | ◇ UNVERIFIED |
| NPNortheast Precast CORP | Millville | NJ | — | ◇ UNVERIFIED |
| NINorthern Il Wilbert Vault CO INC | Belvidere | IL | — | ◇ UNVERIFIED |
| NMNorthfield Mundelein Plant | Mundelein | IL | — | ◇ UNVERIFIED |
| NHNorth Houston Plant | Fort Worth | TX | — | ◇ UNVERIFIED |
| NRNorthland Ready Mix INC | Pleasant Valley | MO | — | ◇ UNVERIFIED |
| NMNorth Marina Ameron Hulbert | Everett | WA | — | ◇ UNVERIFIED |
| NINorthwest Illinois Construction CO | Rock Falls | IL | — | ◇ UNVERIFIED |
| NRNorthwest Ready Mix, INC. | Astoria | OR | — | ◇ UNVERIFIED |
| NCNorthwind Concrete Products CO | Posen | IL | — | ◇ UNVERIFIED |
| NCNorthwind Concrete Products CO | South Beloit | IL | — | ◇ UNVERIFIED |
| NINorwalk Iowa Ready Mix | Ankeny | IA | — | ◇ UNVERIFIED |
| NRNorwalk Ready Mix | Des Moines | IA | — | ◇ UNVERIFIED |
| NRNorwalk Ready Mix Concrete INC | Indianola | IA | — | ◇ UNVERIFIED |
| NVNorwalk Vault CO | Bridgeport | CT | — | ◇ UNVERIFIED |
| NRNorwich Ready Mix Concrete Plant Facility | Norwich | CT | — | ◇ UNVERIFIED |
| NBNova Brik Midamerica Llc-sikeston | Sikeston | MO | — | ◇ UNVERIFIED |
| NWNu Wood Design | Lake Forest | CA | — | ◇ UNVERIFIED |
| NNyack | Valley Cottage | NY | — | ◇ UNVERIFIED |
| OCOakely City | Oakley | UT | — | ◇ UNVERIFIED |
| OFOberon Fuels Kershaw Facility | Brawley | CA | — | ◇ UNVERIFIED |
| ORO'brien Ready Mix - Chanute Plant | Chanute | KS | — | ◇ UNVERIFIED |
| ORO'brien Ready Mix - Fort Scott Plant | Fort Scott | KS | — | ◇ UNVERIFIED |
| ORO'brien Ready Mix - Frontenac Plant | Frontenac | KS | — | ◇ UNVERIFIED |
| ORO'brien Ready Mix - Galena Plant | Galena | KS | — | ◇ UNVERIFIED |
| ORO'brien Ready Mix - Parsons Plant | Parsons | KS | — | ◇ UNVERIFIED |
| ORObrien Ready Mix - Yates Center | Yates Center | KS | — | ◇ UNVERIFIED |
| ORObrien Rock - Chanute | Chanute | KS | — | ◇ UNVERIFIED |
| ORObrien Rock Co., INC. | Frontenac | KS | — | ◇ UNVERIFIED |
| ORObrien Rock - Galena | Galena | KS | — | ◇ UNVERIFIED |
| ORObrien Rock - Iola | Iola | KS | — | ◇ UNVERIFIED |
| ORObrien Rock (portable) | Saint Paul | KS | — | ◇ UNVERIFIED |
| OCObt Concrete Batch Plant | Orlando | FL | — | ◇ UNVERIFIED |
| OROceanside Rmc Plant | Oceanside | CA | — | ◇ UNVERIFIED |
| OCOconee Concrete Company, INC. | Phenix City | AL | — | ◇ UNVERIFIED |
| OCOconee Concrete Company, INC. | Opelika | AL | — | ◇ UNVERIFIED |
| OROconnor Ready Mix Plant 11 | San Antonio | TX | — | ◇ UNVERIFIED |
| OIOctochem INC | Vandalia | IL | — | ◇ UNVERIFIED |
| OFOdessa Facility | Odessa | FL | — | ◇ UNVERIFIED |
| OIOemeta INC. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| OIO&g Industries INC Beacon Falls | Beacon Falls | CT | — | ◇ UNVERIFIED |
| OSOilfield Solutions Midland | Midland | TX | — | ◇ UNVERIFIED |
| OOldcastle | Lockport | IL | — | ◇ UNVERIFIED |
| OOldcastle | Elgin | IL | — | ◇ UNVERIFIED |
| OOldcastle | Kenosha | WI | — | ◇ UNVERIFIED |
| OOldcastle | Morgan Hill | CA | — | ◇ UNVERIFIED |
| OAOldcastle Adams Products | Clarksville | TN | — | ◇ UNVERIFIED |
| OAOldcastle Apg Company, Great Lakes | Cincinnati | OH | — | ◇ UNVERIFIED |
| OAOldcastle Architectural West INC | Austin | TX | — | ◇ UNVERIFIED |
| OAOldcastle Architectural West INC | Rosenberg | TX | — | ◇ UNVERIFIED |
| OAOldcastle Architectural West INC | Dallas | TX | — | ◇ UNVERIFIED |
| OCOldcastle - Crested Butte Rmc Plant | Crested Butte Area | CO | — | ◇ UNVERIFIED |
| OCOld Castle Dba United - Two Feathers Pit | Montrose | CO | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Platteville | CO | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Acworth | GA | — | ◇ UNVERIFIED |
 Oldcastle Infrastructure INC. - Courtland | Courtland | MN | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Houston | TX | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Kalamazoo | MI | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Lakeside | CA | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Mansfield | TX | — | ◇ UNVERIFIED |
| OPOldcastle Precast Brookshire Plant | Brookshire | TX | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Medley | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Manchester | NY | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Chandler | AZ | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Greensboro | NC | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Bartow | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC. | Edgewood | MD | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. - Bellingham | Bellingham | WA | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. - Jacksonvillesp | Jacksonville | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. - Tallahasseesp | Midway | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast San Antonio Plant | San Antonio | TX | — | ◇ UNVERIFIED |
