| KKrf | Foristell | MO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KKrm | O Fallon | MO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KKrm | O'Fallon | MO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KCKronos Concrete LLC | Lake Orion | MI | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KSKuert - South Bend 601 | South Bend | IN | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KOKY - Office Kentucky 800 | Louisville | KY | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LGLake Geneva - Schmitz Ready Mix | Lake Geneva | WI | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LRLaredo Ready Mix Ltd | Laredo | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LCLauren Concrete - Pflugerville | Pflugerville | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LCLauren Concrete - Plant 14 | Brenham | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LCLauren Concrete - Plant 2/9 | Austin | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LCLauren Concrete - Plant 3/4 | Round Rock | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LPLawrenceville Plant 101 | Lawrenceville | GA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LPLebanon Plant | Lebanon | OH | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LPLima Plant 191 | Lima | OH | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LCLivingston's Concrete Service, Inc. - Corporate | Roseville | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LCLivingston's Concrete Service, Inc. - Plant 4 | Marysville | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LMLone Mountain Plant #72 | Las Vegas | NV | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LLongview | Longview | WA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LSLumber St. Plant 110 | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MMMac M | Longview | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MPMain Plant 6 | Manhattan | KS | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MCManitou Concrete | Rochester NY | NY | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MPMarengo Plant - 286 | Marengo | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MPMarion Plant | Fombell | PA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MRMathews Ready Mix - Yuba City | Yuba City | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MPMcHenry Plant 288 | Mchenry | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MMcKinney | Mckinney | TX | Food Manufacturing311812 | 20-99 | ◐ LIKELY ACTIVE |
| MSMedley Shop | Medley | FL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| M1Miami 17th Avenue Yard 401 | Miami | FL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MAMid America Ready Mix LLC-HUTCH/LYONS | Hutchinson | KS | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MPMiddletown Plant 408 | Middletown | OH | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MPMiramar Plant #33 | Miramar | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MRMiramar Ready Mix Plant | San Diego | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MIModern Industries, Inc. | Flint | MI | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MOMonroe Office 400 | Monroe | OH | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MPMontgomery Plant - 255 | Montgomery | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MCMorgan Concrete Company - Corporate Office | Toccoa | GA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MRMoundhouse Readymix | Mound House | NV | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MRMoundhouse Readymix | Moundhouse | NV | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NRNational Ready Mix - R-118 Idaho Falls | Idaho Falls | ID | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NRNAZ Ready Mix Fleet | Prescott | AZ | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NDNERM - Delivery | Sulphur Springs | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NFNew Fairview | Rhome | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NLNew London | Appleton | WI | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NDNext Day Concrete | Longwood | FL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NANorth Arlington | North Arlington | NJ | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NCNorth Chicago Yard 283 | Lake Bluff | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NLNorthern Lakes Concrete | Eagle River | WI | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| NNorwalk | Norwalk | IA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |