| LCLogan Cnty Board of Cnty Commissioners | Sterling | CO | — | ◇ UNVERIFIED |
| LCLongan Construction CO / Grove Asphalt Plt | Grove | OK | — | ◇ UNVERIFIED |
| LOLorco of Maryland | Elkton | MD | — | ◇ UNVERIFIED |
| LFLorena Facility | Lorena | TX | — | ◇ UNVERIFIED |
| LALos Angeles City Street Maintenance Ap#2 | North Hollywood | CA | — | ◇ UNVERIFIED |
| LCLoudoun County Asphalt Co, LLC | Leesburg | VA | — | ◇ UNVERIFIED |
| LPLouisville Paving CO INC - Avoca Plant | Louisville | KY | — | ◇ UNVERIFIED |
| LELowe Enterprises INC | Cary | IL | — | ◇ UNVERIFIED |
| LBLowes Blacktop & Excavating | Terre Haute | IN | — | ◇ UNVERIFIED |
| LBLP Body Shop INC | Yakima | WA | — | ◇ UNVERIFIED |
| LHLucedale Hot Mix Asphalt Plant | Lucedale | MS | — | ◇ UNVERIFIED |
| LRLuna Road Hot Mix Asphalt Plant | Dallas | TX | — | ◇ UNVERIFIED |
| LWL & W Construction | Markesan | WI | — | ◇ UNVERIFIED |
| LALynchburg Asphalt Plant | Lynchburg | VA | — | ◇ UNVERIFIED |
| LCLynch CORP. | East Providence | RI | — | ◇ UNVERIFIED |
| MCMac Construction & Excavating Asphalt Plant | Grayson | KY | — | ◇ UNVERIFIED |
| MCMac Construction & Excavating, INC. | Saint Albans | WV | — | ◇ UNVERIFIED |
| MAMaclair Asphalt Sales LLC | Dupo | IL | — | ◇ UNVERIFIED |
| MCMadden Contracting CO LLC - Astec Asphalt Plant #ap-16 | Natchitoches | LA | — | ◇ UNVERIFIED |
| MCMadden Contracting CO LLC - Shreveport Hot Mix Asphalt Plant | Statewide | LA | — | ◇ UNVERIFIED |
| MCMadden Contracting CO LLC - Sibley Hot Mix Asphalt Plant | Sibley | LA | — | ◇ UNVERIFIED |
| MCMadden Contracting Company LLC - Ap-9 | Mansfield | LA | — | ◇ UNVERIFIED |
| MEMaeser East Pit | Maeser | UT | — | ◇ UNVERIFIED |
| MWMaeser West Pit | Maeser | UT | — | ◇ UNVERIFIED |
| MCMago Construction CO LLC - Monticello Plant | Monticello | KY | — | ◇ UNVERIFIED |
| MLMagruder Limestone CO Inc-troy Quarry | Troy | MO | — | ◇ UNVERIFIED |
| MLMagruder Limestone Company Ashely Quarry | Bowling Green | MO | — | ◇ UNVERIFIED |
| MPMagruder Paving LLC (port-0667) | Portable | MO | — | ◇ UNVERIFIED |
| MBMallette Brothers Construction Company INC | Gautier | MS | — | ◇ UNVERIFIED |
| MBMallette Brothers Construction Company, Lucedale Asphalt Plant #2 | Lucedale | MS | — | ◇ UNVERIFIED |
| MAMalmo Asphalt Plant | Leland | NC | — | ◇ UNVERIFIED |
| MHMalouffs Hi Valley Paving | Alamosa | CO | — | ◇ UNVERIFIED |
| MIManatts, INC. | Brooklyn | IA | — | ◇ UNVERIFIED |
| MTMancils Tractor Service INC | Palm City | FL | — | ◇ UNVERIFIED |
| MHMandan, Hidatsa, and Arikara (mha) Nation Clean Fuels Refinery | Plaza | ND | — | ◇ UNVERIFIED |
| MHManor Hot Mix Plant | Manor | TX | — | ◇ UNVERIFIED |
| MLMansfield Lime & Stone Quarry INC. | Mountain Grove | MO | — | ◇ UNVERIFIED |
| MPMarathon Petroleum Company LP | Saint Elmo | IL | — | ◇ UNVERIFIED |
| MPMarathon Petroleum Company Lp- Louisville Cane Run Terminal | Louisville | KY | — | ◇ UNVERIFIED |
| MOMarine Oil Terminal | Chicago | IL | — | ◇ UNVERIFIED |
| MFMarionneaux #1 Facility | Livonia | LA | — | ◇ UNVERIFIED |
| MSMark Sand & Gravel Acquisition CO | Fergus Falls | MN | — | ◇ UNVERIFIED |
| MSMark Sand & Gravel CO - Nonmetallic | Fergus Falls | MN | — | ◇ UNVERIFIED |
| MPMarshall Paving Inc-marshall Paving INC | Marshall | MO | — | ◇ UNVERIFIED |
| MAMarsh Asphalt Dravosburg Plt | Dravosburg | PA | — | ◇ UNVERIFIED |
| MAMartin Asphalt - Hondo | Hondo | TX | — | ◇ UNVERIFIED |
| MMMartin Marietta | Malvern | AR | — | ◇ UNVERIFIED |
| MMMartin Marietta Aggregates - Fairfield | Fairfield | OH | — | ◇ UNVERIFIED |
| MMMartin Marietta Materials, INC Dba I-75 Quarry (east) | Heiskell | TN | — | ◇ UNVERIFIED |
| MMMartin Marietta Materials INC – East Division | Newport News | VA | — | ◇ UNVERIFIED |
