| MCMcgeorge Construction Co., INC. - Cranford Division - Portable Asphalt Plant #2 | Hot Springs | AR | — | ◇ UNVERIFIED |
| MMMckee Materials LLC - Plant 1 | Nelsonville | OH | — | ◇ UNVERIFIED |
| MSMclaughlin & Schulz INC | Marshall | MN | — | ◇ UNVERIFIED |
| MEMclendon Enterprises | Ellabell | GA | — | ◇ UNVERIFIED |
| MAMclendon-lyons Asphalt Plant | Lyons | GA | — | ◇ UNVERIFIED |
| MMMc Materials 62 - Mountain View | Mountain View | MO | — | ◇ UNVERIFIED |
| MMMc Materials Plant 63 - Summersville | Summersville | MO | — | ◇ UNVERIFIED |
| MMMc Materials Plant 64 - Winona | Winona | MO | — | ◇ UNVERIFIED |
| MAMcminns Asphalt CO INC Mason Dixon Plt | Peach Bottom | PA | — | ◇ UNVERIFIED |
| MCMcminnville Concrete | Mcminnville | OR | — | ◇ UNVERIFIED |
| MCMcnamara Contracting INC | Rosemount | MN | — | ◇ UNVERIFIED |
| MCMcpherson Concrete | Mcpherson | KS | — | ◇ UNVERIFIED |
| MCMcpherson Concrete - Lindsborg Concrete | Lindsborg | KS | — | ◇ UNVERIFIED |
 Meadow Burke, LLC. | Tampa | FL | — | ◇ UNVERIFIED |
| MSMeadows Stone and Paving - Monterville | Monterville | WV | — | ◇ UNVERIFIED |
| MRMeadville Redi Mix I/rt 322 | Meadville | PA | — | ◇ UNVERIFIED |
| MCMechanicsville Concrete Llc-airport Plant (portugee Road) | Sandston | VA | — | ◇ UNVERIFIED |
| MLMeckleys Limestone Prod/beavertown Asphalt Plt | Middleburg | PA | — | ◇ UNVERIFIED |
| MMMedina Materials CO. (1652000061) | Lodi | OH | — | ◇ UNVERIFIED |
| MSMedina Supply North Ridgeville Plant 500 | North Ridgeville | OH | — | ◇ UNVERIFIED |
| MSMeeker Sand & Gravel INC | Meeker | CO | — | ◇ UNVERIFIED |
| MPMelissa Plant | Melissa | TX | — | ◇ UNVERIFIED |
| MUMel USA Property Holder I, LLC | Spring Hill | FL | — | ◇ UNVERIFIED |
| MRMemphis Ready Mix Malone Road Plant Dba Buzzi Unicem Ready Mix, LLC | Memphis | TN | — | ◇ UNVERIFIED |
| MIMenard Incorporated | Terre Haute | IN | — | ◇ UNVERIFIED |
| MVMercer Vault Company | Fredericksburg | VA | — | ◇ UNVERIFIED |
| MCMerrills Contractors INC | Springfield | IL | — | ◇ UNVERIFIED |
| MGMertel Gravel CO | Peru | IL | — | ◇ UNVERIFIED |
| MCMetal Crafters | Ronkonkoma | NY | — | ◇ UNVERIFIED |
| MMetalico-evans | Atlanta | GA | — | ◇ UNVERIFIED |
| MCMetro Concrete LLC | Biloxi | MS | — | ◇ UNVERIFIED |
| MIMetrocon INC | Central | SC | — | ◇ UNVERIFIED |
| MIMetrocon INC | Travelers Rest | SC | — | ◇ UNVERIFIED |
| MIMetrocon Inman Plant | Inman | SC | — | ◇ UNVERIFIED |
| MMMetro Materials Concrete Batch Plant | Valley Park | MO | — | ◇ UNVERIFIED |
| MMMetro Materials - Hanley Plant-kinloch | Kinloch | MO | — | ◇ UNVERIFIED |
| MMMetro Materials, INC. - Malone Road | Memphis | TN | — | ◇ UNVERIFIED |
| MMMetro Materials (valley Park Plant)-fenton Supply Company | Valley Park | MO | — | ◇ UNVERIFIED |
| MMMetro Mix LLC | Denver | CO | — | ◇ UNVERIFIED |
| MCMetromont Corporation | Charlotte | NC | — | ◇ UNVERIFIED |
| MLMetromont LLC - Richmond Plant | Richmond | VA | — | ◇ UNVERIFIED |
| MMMetromont Materials | Charlotte | NC | — | ◇ UNVERIFIED |
| MMMetromont Materials-catawba | Hickory | NC | — | ◇ UNVERIFIED |
| MMMetromont Materials CORP Holly Hill | Holly Hill | SC | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation | Marion | NC | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation Belton | Anderson | SC | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation - Concord Plt | Concord | NC | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation - Indian Trail Plant | Indian Trail | NC | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation Richburg | Richburg | SC | — | ◇ UNVERIFIED |
| MMMetromont Materials Limited Liability Company | North Wilkesboro | NC | — | ◇ UNVERIFIED |
