| MMMmc Materials Inc, Winona | Winona | — | ◇ UNVERIFIED |
| MMMmc Materials Inc, Yazoo City 30152 | Yazoo | — | ◇ UNVERIFIED |
| OCOld Colonial Brick LLC | Corinth | — | ◇ UNVERIFIED |
| OROscar Renda Contracting, Biloxi North Facility | Biloxi | — | ◇ UNVERIFIED |
| OAOxford Auxiliary Division of B and B Concrete Company INC | Oxford | — | ◇ UNVERIFIED |
| PCPike County Ready Mix Concrete | Magnolia | — | ◇ UNVERIFIED |
| PBPine Belt Ready Mix Concrete INC | Laurel | — | ◇ UNVERIFIED |
| PBPine Belt Ready Mix, Glendale Avenue Plant | Hattiesburg | — | ◇ UNVERIFIED |
| PPPrecision Packaging INC | Jackson | — | ◇ UNVERIFIED |
| RLRollcon Llc, Onsite Plant | Clinton | — | ◇ UNVERIFIED |
| SLService Lumber Company | Rolling Fork | — | ◇ UNVERIFIED |
| SCSimpson County Ready Mix Concrete, Plant Number 6 | Magee | — | ◇ UNVERIFIED |
| SCSoutheastern Concrete Company Inc, Collins Facility | Collins | — | ◇ UNVERIFIED |
| SRSpencer Ready Mix INC | Jackson | — | ◇ UNVERIFIED |
| SSStone Shop Llc, the | Picayune | — | ◇ UNVERIFIED |
| SDSuper Dry Industries INC | Shuqualak | — | ◇ UNVERIFIED |
| TCTindall Corporation, Moss Point Ready Mix | Moss Point | — | ◇ UNVERIFIED |
| TCTri County Ready Mix Inc, Stringer Plant | Stringer | — | ◇ UNVERIFIED |
| BDByram Dunn Utility Products LLC | Byram | 100–499 | ◐ LIKELY ACTIVE |
| CCCaney Creek Dunn Utility Products LLC | Jackson | 1–19 | ◐ LIKELY ACTIVE |
| GJGMS Jackson | Jackson | 1–19 | ◐ LIKELY ACTIVE |
| JJanpc | Prentiss | 1–19 | ◐ LIKELY ACTIVE |
| NANew Albany Dunn Utility Products LLC | New Albany | 20–99 | ◐ LIKELY ACTIVE |
| RRw-na | Byhalia | 100–499 | ◐ LIKELY ACTIVE |
| SCSEK Corporation / Shook | New Albany | 1–19 | ◐ LIKELY ACTIVE |
| TCTindall Corporation - Mississippi Division | Moss Point | 100–499 | ◐ LIKELY ACTIVE |
| TGTrulite Glass & Aluminum Solutions Grenada | Grenada | 20–99 | ◐ LIKELY ACTIVE |
| FRFranklin Ready Mix Concrete Inc, Plant Number 2 | Bude | 1–19 | ◇ UNVERIFIED |
