| MHMsci - Hot Mix Plant No2 Nsr 4453 | Los Lunas | NM | — | ◇ UNVERIFIED |
| MHMsci - Hot Plant No1 Nsr 3171 | Mesquite | NM | — | ◇ UNVERIFIED |
| MPMt Pleasant Blacktopping Company (1409030042) | Fairfield | OH | — | ◇ UNVERIFIED |
| MPMunn & Perkins | Escalon | CA | — | ◇ UNVERIFIED |
| MCMurdock Concrete Company | Greensboro | NC | — | ◇ UNVERIFIED |
| MCMurphy Consolidated Industries | Follansbee | WV | — | ◇ UNVERIFIED |
| MOMv Orange Rm | Orange | TX | — | ◇ UNVERIFIED |
| MPMv Port Authur Rm 1 | Port Authur | TX | — | ◇ UNVERIFIED |
| MWM W Streetman Etal #3-alt Tank Battery - Ada Field | Taylor | LA | — | ◇ UNVERIFIED |
| NPNagle Paving C0mpany | Livonia | MI | — | ◇ UNVERIFIED |
| NPNampa Paving and Asphalt | Nampa | ID | — | ◇ UNVERIFIED |
| NINanomaterials Innovation Center LLC | Alfred | NY | — | ◇ UNVERIFIED |
| NNNapco - North Bethany Quarry | Bethany | MO | — | ◇ UNVERIFIED |
| NRNaperville Ready Mix INC | Naperville | IL | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Channahon | IL | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Yorkville | IL | — | ◇ UNVERIFIED |
| NBNarvick Brothers Lumber CO INC | Morris | IL | — | ◇ UNVERIFIED |
| NRNashville Ready Mix of Columbia | Columbia | TN | — | ◇ UNVERIFIED |
| NRNashville Ready Mix of Dickson, LLC | Dickson | TN | — | ◇ UNVERIFIED |
| NRNashville Ready Mix of La Vergne | La Vergne | TN | — | ◇ UNVERIFIED |
| NANational Asphalt Paving CORP - Fairfax | Fairfax | VA | — | ◇ UNVERIFIED |
| NRNational Ready Mix Concrete | Van Nuys | CA | — | ◇ UNVERIFIED |
| NRNational Ready Mix Concrete CO | Santa Clarita | CA | — | ◇ UNVERIFIED |
| NRNational Ready Mix Concrete CO | Irvine | CA | — | ◇ UNVERIFIED |
| NRNational Ready Mix Concrete CO. | Los Angeles | CA | — | ◇ UNVERIFIED |
| NRNational Ready Mixed Concrete CO | Artesia | CA | — | ◇ UNVERIFIED |
| NRNational Ready Mixed Concrete CO | Canoga Park | CA | — | ◇ UNVERIFIED |
| NRNational Ready Mixed Concrete CO | Irwindale | CA | — | ◇ UNVERIFIED |
| NFNatl Fuel Gas Supply/knox Station | Brookville | PA | — | ◇ UNVERIFIED |
| NCNavasota Concrete | Navasota | TX | — | ◇ UNVERIFIED |
| NWN.b. West Contracting CO. Inc.-plant #5 | Bourbon | MO | — | ◇ UNVERIFIED |
| NDNc Dot Reu Environmental Ops | Pittsboro | NC | — | ◇ UNVERIFIED |
| NINebco, INC. Dba-kearney Crete and Block CO. | Kearney | NE | — | ◇ UNVERIFIED |
| NVNebraska Vault INC | Columbus | NE | — | ◇ UNVERIFIED |
| NANebr Asphalt Cmi Magnum 150sr | Portable | NE | — | ◇ UNVERIFIED |
| NPNedrow Plant | Nedrow | NY | — | ◇ UNVERIFIED |
| NCNeeus CORP Sealmaster Albuquerque | Albuquerque | NM | — | ◇ UNVERIFIED |
| NCNeosho Concrete Products Inc-neosho Concrete Products INC | Neosho | MO | — | ◇ UNVERIFIED |
| NCNesl - Como Park Hot Mix Asphalt | Buffalo | NY | — | ◇ UNVERIFIED |
| NONesl - Olean Hot Mix Asphalt | Olean | NY | — | ◇ UNVERIFIED |
| NWNesl - Wehrle/barton Facility | Buffalo | NY | — | ◇ UNVERIFIED |
| NSNettleton Shipyard | Chauvin | LA | — | ◇ UNVERIFIED |
| NRNevada Ready Mix Lone Mountain | Las Vegas | NV | — | ◇ UNVERIFIED |
| NANew Age Construction Supply INC | Springfield, Township of | OH | — | ◇ UNVERIFIED |
| NCNew Canton Concrete | New Canton | VA | — | ◇ UNVERIFIED |
| NCNew Castle Asphalt LLC - Rensselaer | Rensselaer | NY | — | ◇ UNVERIFIED |
| NCNewcastle Concrete Batch Plant | Newcastle | WY | — | ◇ UNVERIFIED |
| NENew England Emulsions CORP | Holliston | MA | — | ◇ UNVERIFIED |
| NENew Enterprise Stone/clearfield Asphalt | Curwensville | PA | — | ◇ UNVERIFIED |
| NENew Enterprise Stone & Lime CO - Chambersburg Blacktop Plant | Chambersburg | PA | — | ◇ UNVERIFIED |