| CBColumbus Brick Company INC | Columbus | 500+ | ● ACTIVE |
| CMColumbus Marble Works, INC. | Columbus | 20–99 | ● ACTIVE |
Mmc Materials INC | Madison | — | ● ACTIVE |
Pfg Precision Optics INC | Ocean Springs | 20–99 | ● ACTIVE |
Ferson Technologies LLC | Ocean Springs | 1–19 | ● ACTIVE |
Gulf Concrete Technology LLC | Long Beach | — | ● ACTIVE |
Desiccare INC | Richland | — | ● ACTIVE |
Dunn Utility Products, LLC | Byram | — | ● ACTIVE |
Mmc Materials Gulf Coast, LLC | Gulfport | — | ● ACTIVE |
| BAB and B Concrete CO Inc, Tupelo Div | Tupelo | 20–99 | ◐ LIKELY ACTIVE |
Continental Tire the Americas, LLC | Clinton | 500+ | ◐ LIKELY ACTIVE |
| RURoxul Usa, INC. | Byhalia | 500+ | ◐ LIKELY ACTIVE |
| SRSoutheast Ready Mix INC | Waynesboro | 1–19 | ◐ LIKELY ACTIVE |
| CCCordova Concrete | Nesbit | — | ◐ LIKELY ACTIVE |
| GTGolden Triangle Mill Service | Columbus | 100–499 | ◐ LIKELY ACTIVE |
| HPHanson Pipe and Products Southeast INC | Como | — | ◐ LIKELY ACTIVE |
Mmc Materials INC | Saltillo | — | ◐ LIKELY ACTIVE |
Mmc Materials Inc, Lakeland Drive 30106 | Brandon | — | ◐ LIKELY ACTIVE |
| TSTri State Ready Mix, Plant Number 22 | Olive Branch | — | ◐ LIKELY ACTIVE |
| TGTrulite Glass and Aluminum Solutions | Grenada | — | ◐ LIKELY ACTIVE |
| TWTupelo Wilbert Burial Vault | Verona | 1–19 | ◐ LIKELY ACTIVE |
| VIView INC | Olive Branch | 20–99 | ◐ LIKELY ACTIVE |
| BCBayou Concrete Llc, Pascagoula | Pascagoula | — | ◐ LIKELY ACTIVE |
| GSGulf States Ready Mix Concrete - Plant No 10 | Gulfport | — | ◐ LIKELY ACTIVE |
| HPHanson Pipe & Products, Jackson South | Jackson | — | ◐ LIKELY ACTIVE |
| HDHome Decor Company INC | Tupelo | — | ◐ LIKELY ACTIVE |
| JRJackson Ready-mix Plant 26 | Canton | — | ◐ LIKELY ACTIVE |
| JRJackson Ready-mix Plant 8 | Brandon | — | ◐ LIKELY ACTIVE |
| LSLand Shapers Inc, Asphalt Plant | Gulfport | — | ◐ LIKELY ACTIVE |
Mmc Materials | Batesville | — | ◐ LIKELY ACTIVE |
Mmc Materials INC | Hattiesburg | — | ◐ LIKELY ACTIVE |
Mmc Materials INC | Cold Water | — | ◐ LIKELY ACTIVE |
Mmc Materials Inc, Byhalia Plnt | Byhalia | — | ◐ LIKELY ACTIVE |
Mmc Materials Inc, Ellisville | Ellisville | — | ◐ LIKELY ACTIVE |
Mmc Materials, INC. Greenville - 30501 | Greenville | — | ◐ LIKELY ACTIVE |
Mmc Materials Inc, Horn Lake 30204 | Horn Lake | — | ◐ LIKELY ACTIVE |
Mmc Materials Inc, Jackson Elton Road | Jackson | — | ◐ LIKELY ACTIVE |
Mmc Materials Inc, Starkville 30854 | Starkville | — | ◐ LIKELY ACTIVE |
Mmc Materials, Meridian Arundel Rd | Meridian | — | ◐ LIKELY ACTIVE |
| OSOxford Sand Company Inc, Oxford Plant | Oxford | — | ◐ LIKELY ACTIVE |
| SDSteel Dynamics Columbus, LLC | Columbus | — | ◐ LIKELY ACTIVE |
| TSTri State Brick and Tile Company INC | Jackson | — | ◐ LIKELY ACTIVE |
| UIUsg Interiors, LLC | Greenville | — | ◐ LIKELY ACTIVE |
| ARAmericrete Ready-mix Plant 61 | Meridian | — | ◇ UNVERIFIED |
| JRJackson Ready-mix Plant 4 | Byram | — | ◇ UNVERIFIED |
| MCMetro Concrete | Ocean Springs | — | ◇ UNVERIFIED |
| HRHernando Redi Mix | Nesbit | 1–19 | ◐ LIKELY ACTIVE |
| RURenin US LLC | Tupelo | 100–499 | ◐ LIKELY ACTIVE |
| TSThe Stone Source, INC | Brandon | 20–99 | ◐ LIKELY ACTIVE |
| TCTupelo Concrete Products Company INC | Tupelo | 20–99 | ◐ LIKELY ACTIVE |