| EPExeter Portable | Spartanburg | — | ◇ UNVERIFIED |
| EMExtreme Materials INC | Summerville | — | ◇ UNVERIFIED |
| FCFlorence Concrete Products INC | Florence | — | ◇ UNVERIFIED |
| FPFort Prince Portable | Wellford | — | ◇ UNVERIFIED |
| FQFosterdixiana Quarry - Closed | West Columbia | — | ◇ UNVERIFIED |
| FGFuyao Glass | Fountain Inn | — | ◇ UNVERIFIED |
| GFGeorgetown Facility | Georgetown | — | ◇ UNVERIFIED |
| GCGlasscock Company | Sumter | — | ◇ UNVERIFIED |
| GCGlf Construction Sc Temporary Concrete Batch Plant | Beaufort | — | ◇ UNVERIFIED |
| GCGossett Concrete Pipe Company INC | Taylors | — | ◇ UNVERIFIED |
| GIGs Ii INC | North Charleston | — | ◇ UNVERIFIED |
| GIGuardian Industries LLC - Richburg | Richburg | — | ◇ UNVERIFIED |
| HAHanson Aggregates Anderson Quarry | Anderson | — | ◇ UNVERIFIED |
| HAHanson Aggregates Sandy Flats Quarry | Taylors | — | ◇ UNVERIFIED |
| HHardaway:plant #17 | Graniteville | — | ◇ UNVERIFIED |
| IMIko Mat Tech INC | Chester | — | ◇ UNVERIFIED |
| IPIntercon Portable | Summerville | — | ◇ UNVERIFIED |
| KCKnight's Companies - Knights Redi-mix Plant 15 | Summerville | — | ◇ UNVERIFIED |
| KSKnights Septic Tank Service INC | Summerville | — | ◇ UNVERIFIED |
| KMKrm Midlands-llc-plant 6 | Blythewood | — | ◇ UNVERIFIED |
| KSKrm South, LLC - Plant 10 | Hardeeville | — | ◇ UNVERIFIED |
| LCLane Construction Plant 23 | Florence | — | ◇ UNVERIFIED |
| LSLD Slims LLC | North Charleston | — | ◇ UNVERIFIED |
| MCMarion Ceramics, Inc, | Marion | — | ◇ UNVERIFIED |
| MRMaterials Research Group, LLC | Beaufort | — | ◇ UNVERIFIED |
| MCMst Concrete Products Incorporated | Central | — | ◇ UNVERIFIED |
| MSMultistone SC, Inc | North Charleston | — | ◇ UNVERIFIED |
| OAOldcastle Adams Products - Ridgeway | Ridgeway | — | ◇ UNVERIFIED |
| OMOpta Minerals | Hardeeville | — | ◇ UNVERIFIED |
| OROrangeburg Redi-mix Concrete | Orangeburg | — | ◇ UNVERIFIED |
| OROrangeburg Redi-mix Concrete INC Bamberg Plant | Bamberg | — | ◇ UNVERIFIED |
| OROrangeburg Redi-mix Concrete INC Harleyville | Harleyville | — | ◇ UNVERIFIED |
| PPPalmetto Precast, INC. | Columbia | — | ◇ UNVERIFIED |
| PVPalmetto Vermiculite | Woodruff | — | ◇ UNVERIFIED |
| PCPatriot Concrete Project Emerald Plant #1 | Spartanburg | — | ◇ UNVERIFIED |
| PRPatriot Ready Mixed Concrete Plant 3 | Anderson | — | ◇ UNVERIFIED |
| PCPiedmont Concrete Products INC - Spartanburg Plant | Spartanburg | — | ◇ UNVERIFIED |
| RDReal Deal Countertops, LLC | Summerville | — | ◇ UNVERIFIED |
| RVReal Value | Columbia | — | ◇ UNVERIFIED |
| SCSmith Columbia Corporation | Hopkins | — | ◇ UNVERIFIED |
| SCSmiths Concrete Products Incorporated | Bishopville | — | ◇ UNVERIFIED |
| SCSoutheastern Clay CO | Aiken | — | ◇ UNVERIFIED |
| SLSoutheastern Laboratory Apparatus | North Augusta | — | ◇ UNVERIFIED |
| SSSrm - Summerville #708 | Summerville | — | ◇ UNVERIFIED |
| SCStandard Corporation Jones Lane | Lugoff | — | ◇ UNVERIFIED |
| SSStevenson-weir Southern - Clinton Plant | Clinton | — | ◇ UNVERIFIED |
| SSStevenson-weir Southern - Spartanburg Plant | Wellford | — | ◇ UNVERIFIED |
| SLStonequarters LLC | Sumter | — | ◇ UNVERIFIED |
| SMSuperior Mobile Concrete LLC | Piedmont | — | ◇ UNVERIFIED |
| TTechniseal | West Columbia | — | ◇ UNVERIFIED |
