| LBLeonard Block Company | Winston Salem | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LBLightweight Block Lexington Corporation | Lexington | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LCLmp Concrete, INC. | Pink Hill | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LCLoflin Concrete CO. -- Pisgah Church Rd. | Kernersville | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LSLs Starrett CO | Mount Airy | NC | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MUMafic USA LLC ** Inactive ** | Shelby | NC | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| MMMartin Marietta Materials Incorporated | Raleigh | NC | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| MMMartin Marietta Materials, INC. - Rocky Point | Rocky Point | NC | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMartin Marietta Materials, INC. - Wilson Quarry | Wilson | NC | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| MRMassey Ready-mix Concrete, INC. | Greensboro | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MHMccarthy Henderson Concrete Batch Plant | Henderson | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMcdowell Concrete Supply, LLC | Marion | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MBMcgee Brothers Company Incorporated | Midland | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMetromont Corporation | Charlotte | NC | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMMetromont Materials-catawba | Hickory | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation | Marion | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation - Concord Plt | Concord | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation - Indian Trail Plant | Indian Trail | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMetromont Materials Limited Liability Company | North Wilkesboro | NC | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MPMetromont Prestress Company | Charlotte | NC | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMMix Masters Concrete, INC. | Beulaville | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMurdock Concrete Company | Greensboro | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NPNc Products Corporation - Fuquay | Fuquay Varina | NC | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| NRNortheastern Ready Mix INC | Elizabeth City | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOld Carolina Brick Gold Hill | Gold Hill | NC | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Greensboro | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PRPhillips Ready Mix Concrete, INC. | Yadkinville | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PCPlt Concrete Services, INC. | Wilson | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PCPlt Concrete Services, Incorporated | Zebulon | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PMPrince Minerals, LLC - Monroe | Monroe | NC | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| PCPugh Concrete Company | Pittsboro | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| QCQuality Concrete Company | Fayetteville | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| QCQuikrete - Charlotte, Nc Plant | Peachland | NC | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| RIRauch Industries - South York Road Plant | Gastonia | NC | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| RCRea Contracting, LLC 0140 Concrete Plant | Salisbury | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete | Rocky Mount | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Clinton Plant | Clinton | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO | Rural Hall | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO - Greenville | Greenville | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company | Williamston | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company | Wilmington | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company | Winston Salem | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company - Castle Hayne | Castle Hayne | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company - Havelock | Havelock | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company-reames Plan | Charlotte | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete Company - Shallotte | Shallotte | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO Plant 33 | New Bern | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Fayetteville Plant | Fayetteville | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Plant No 6 -laurinburg | Laurinburg | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete - Plant Number 3 - Spring Lake | Spring Lake | NC | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
