| DIDelta Industries, Inc., Yazoo City Plant 17 | Yazoo | — | ◇ UNVERIFIED |
| DPDesign Precast and Pipe Inc, Thomas D Murray Mine | Gulfport | — | ◇ UNVERIFIED |
| DPDesign Precast & Pipe | Gulfport | — | ◇ UNVERIFIED |
 Dunn Utility Products Llc, Byram Precast Plant | Byram | — | ◇ UNVERIFIED |
| FHFazzios Home and Farm Center INC | Gulfport | — | ◇ UNVERIFIED |
| FPForterra Pipe and Precast Llc, Prentiss Plant | Prentiss | — | ◇ UNVERIFIED |
| GAGeneral Atomics Ems Systems, Iuka Facility | Iuka | — | ◇ UNVERIFIED |
| GSGulf States Ready Mix, Moss Point Plant | Moss Point | — | ◇ UNVERIFIED |
| HPHanson Pipe and Precast INC | Hattiesburg | — | ◇ UNVERIFIED |
| HPHanson Pipe & Products, Jackson North | Jackson | — | ◇ UNVERIFIED |
| HPHanson Pipe & Products Southeast INC Hattiesburg | Hattiesburg | — | ◇ UNVERIFIED |
| HPHuey P Stockstill LLC | Picayune | — | ◇ UNVERIFIED |
| HPHuey P. Stockstill Llc, Asphalt Plant No. 4 | Wiggins | — | ◇ UNVERIFIED |
| HPHuey P Stockstill Llc, Picayune | Picayune | — | ◇ UNVERIFIED |
| HPHuey P. Stockstill Llc, Ready Mix Concrete #2 | Poplarville | — | ◇ UNVERIFIED |
| IPI-220 Plant | Jackson | — | ◇ UNVERIFIED |
| JJJ J Ferguson Sand and Gravel Inc, Winona | Winona | — | ◇ UNVERIFIED |
| JSJonathan S Burns Enterprises Llc, Caledonia Ready Mix | Steens | — | ◇ UNVERIFIED |
| LCLamar Concrete INC | Purvis | — | ◇ UNVERIFIED |
| LCLexington Concrete and Block Company Inc, Pearl Plant | Pearl | — | ◇ UNVERIFIED |
| LMLockheed Martin Aeronautical Company | Meridian | — | ◇ UNVERIFIED |
| LBLouisville Brick Company | Louisville | — | ◇ UNVERIFIED |
| MTMark Twain Redi Mix Plant | Horn Lake | — | ◇ UNVERIFIED |
| MCMetro Concrete LLC | Biloxi | — | ◇ UNVERIFIED |
| MMMmc Materials INC | Madison | — | ◇ UNVERIFIED |
 Mmc Materials Inc, Brookhaven | Brookhaven | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Calhoun City | Calhoun City | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Carthage | Carthage | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Clarksdale Plant | Clarksdale | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Clinton Plant | Clinton | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Cordova Plant | Byhalia | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Eupora | Eupora | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Florence | Florence | — | ◇ UNVERIFIED |
| Mmc Materials INC - Forest | Forest | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Forest 30301 | Forest | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Grenada 30514 | Grenada | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Kosciusko 30307 | Kosciusko | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Laurel Plant | Laurel | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Lincoln County | Brookhaven | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Lumberton Temp Site | Lumberton | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Newton | Newton | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Oak Grove 30703 | Oak Grove | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Petal | Petal | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Port Gibson | Port Gibson | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Sherman Plant | Sherman | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Sumrall | Sumrall | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Union 30304 | Union | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Vicksburg Rifle Range Road | Vicksburg | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Waynesboro | Waynesboro | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, West Point Facility | West Point | — | ◇ UNVERIFIED |
