| MCMarsich Crane, INC | Billings | MT | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MCMaster Construction Products, INC. | Orlando | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MHMasterstone Hardscapes LLC | Saint Peters | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMaterials Packaging Corporation | Muskogee | OK | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MSMcgill Septic Tank | Kinsman | OH | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MRMcGlothlin Realty | Phoenix | AZ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MCMckenzie Concrete Products, INC. | Fayetteville | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMcrae Precast Company | Columbus | GA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MOMeans Ornamental Concrete Studio II | Olympia | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MSMedina & Sons Concrete | Taos | NM | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPM.e.g.a. Precast INC. | Shelby Township | MI | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMMemorial Monuments | Burley | ID | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMMemorial Monuments | City of Pocatello | ID | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MOMesa Oaks, LLC | Del Valle | TX | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MTMessina Trucking, INC. | Shelby Township | MI | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MCMetromont Corporation | Richmond | VA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MHMichael Hogg Septic Tank | Lagrange | GA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMichael Precast Concrete, INC. | Loveland | OH | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMichaels Precast Concrete LLC | Rhododendron | OR | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MCMid-america Concrete Applications, LLC | Lees Summit | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MHMid Hudson Concrete Products, INC | Hasbrouck Heights | NJ | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMid-state Precast | Sebring | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMid-state Precast, L.p. | Corcoran | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMMidwest Manufacturing | Pioneer | OH | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMidwest Product Group | Shawnee | KS | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MEMillard Enterprises, LLC | East Syracuse | NY | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MLMiller & Long Construction INC | Mclean | VA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMiller-mize Precast INC. | Columbus | GA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MWMillstone Weber - Port Batch Plant #7001 | St. Charles | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MPMineral Processing Specialties Inc. | Springdale | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMMinnick Midwest LLC Dba Midwest Tile & Concrete Products | Woodburn | IN | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MWMissouri Wilbert Vault CO. INC. | Moberly | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MCMitchell Concrete Pipe CO. INC. | Saginaw | AL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMM & M Precast INC | North East | MD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MCMoca Concrete Poles INC. | Moca | PR | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MLMonierlifetile L L C | Kansas City | MO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MLMonierlifetile L L C | Boca Raton | FL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MLMonierlifetile LLC | San Bernardino | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MMMoonlight Molds, INC. | Gardena | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MCMoore Construction | Dana Point | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MBMt Baker Silo INC | Lynden | WA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MCMurray Concrete Batch Plant G-2 | Murray | UT | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| MTMurrill Tank Service, INC. | Mobile | AL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NENcv Enterprises LLC | Palmetto | GA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NPNebraska Precast, LLC | Columbus | NE | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
 Nelson Precast Products, LLC | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| Nelson Precast Products, LLC | Towson | MD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NBNew Bethlehem Burial Services, INC. | New Bethlehem | PA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NSNewman & Sons INC. | Bloomington | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NINicmar Industries INC Dba George R Roberts Company | Alfred | ME | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
