| AGAmerican Gypsum Sc LLC | Georgetown | 100–499 | ● ACTIVE |
Ceramtec North America LLC | Laurens | 100–499 | ● ACTIVE |
| NSNucor Steel- Berkeley | Huger | 500+ | ● ACTIVE |
| OROrangeburg Redi-mix Concrete | Orangeburg | 20–99 | ● ACTIVE |
Palmetto Vermiculite, INC. | Woodruff | 20–99 | ● ACTIVE |
Rnm, LLC | Trenton | 20–99 | ● ACTIVE |
S.l. Munson & Company INC. | Columbia | 20–99 | ● ACTIVE |
Metromont LLC | Greenville | — | ● ACTIVE |
| PMPaceast Management Group, LLC | Charleston | — | ● ACTIVE |
| CCCarolina Ceramics | Columbia | 20–99 | ◐ LIKELY ACTIVE |
| CJChina Jushi USA Corporation | Columbia | 100–499 | ◐ LIKELY ACTIVE |
| HSHm Southeast Cement Llc/harleyville Site | Harleyville | 500+ | ◐ LIKELY ACTIVE |
| PBPalmetto Brick | Wallace | 100–499 | ◐ LIKELY ACTIVE |
| SCSoutheastern Concrete Products CO INC | Cayce | 20–99 | ◐ LIKELY ACTIVE |
| SWS & W Ready Mix Conway | Conway | 20–99 | ◐ LIKELY ACTIVE |
| CCCarolina Concrete Company - Clinton | Clinton | 20–99 | ◐ LIKELY ACTIVE |
| DCDawkins Concrete Products INC | Hartsville | 20–99 | ◐ LIKELY ACTIVE |
| TUTrebol USA LLC | Andrews | 20–99 | ◐ LIKELY ACTIVE |
| 7G72431 - Guardian Industries LLC | Richburg | 100–499 | ◐ LIKELY ACTIVE |
| AIAci Industries, LLC | Laurens | 20–99 | ◐ LIKELY ACTIVE |
| BDBlue Dot Readi-mix 521 Plant | Fort Mill | — | ◐ LIKELY ACTIVE |
| CPConcrete Pipe & Precast LLC | Summerville | — | ◐ LIKELY ACTIVE |
| CSConcrete Supply CO LLC Blythewood | Blythewood | — | ◐ LIKELY ACTIVE |
| CSConcrete Supply CO LLC - Hwy 101 | Greer | — | ◐ LIKELY ACTIVE |
| CSConcrete Supply CO LLC - Mauldin | Simpsonville | — | ◐ LIKELY ACTIVE |
| CCCore Concrete LLC | Lugoff | 20–99 | ◐ LIKELY ACTIVE |
| DNDimas North America | Columbia | — | ◐ LIKELY ACTIVE |
Holcim (us) INC. | Holly Hill | — | ◐ LIKELY ACTIVE |
| ISInternational Steel Group | Georgetown | — | ◐ LIKELY ACTIVE |
| KRKnight Redi-mix Inc., - Plant 5 | North Charleston | — | ◐ LIKELY ACTIVE |
| LILsp Industrial Ceramics INC | Myrtle Beach | 1–19 | ◐ LIKELY ACTIVE |
| NCNucor CORP - Darlington Plant | Darlington | — | ◐ LIKELY ACTIVE |
| OBOldcastle Building Envelope | Rock Hill | 100–499 | ◐ LIKELY ACTIVE |
| OROrangeburg Redi Mix Concrete INC | Orangeburg | 20–99 | ◐ LIKELY ACTIVE |
| OCOwens Corning Composite Materials Ii, LLC | Starr | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - Harleyville Cement Plant | Harleyville | — | ◐ LIKELY ACTIVE |
| SCSoutheastern Concrete Products Upstate LLC | Simpsonville | 1–19 | ◐ LIKELY ACTIVE |
| ACAmerican Concrete & Precast INC | Anderson | — | ◐ LIKELY ACTIVE |
| ACAmerican Concrete & Precast INC | Greenville | — | ◐ LIKELY ACTIVE |
| AAApac Atlantic Incorporated Georgetown Plant #678 | Georgetown | — | ◐ LIKELY ACTIVE |
| BRBluedot Readi Mix Rock Hill | Rock Hill | — | ◐ LIKELY ACTIVE |
| BMBuilding Materials Manufacturing CORP | Chester | — | ◐ LIKELY ACTIVE |
| CCCamden Concrete Number 3 | Lugoff | — | ◐ LIKELY ACTIVE |
| CICemplank INC | Summerville | — | ◐ LIKELY ACTIVE |
| CCChapman Concrete Products INC Greer | Greer | — | ◐ LIKELY ACTIVE |
| CSCmc Steel Sc | Cayce | — | ◐ LIKELY ACTIVE |
| CSConcrete Supply CO LLC Anderson | Anderson | — | ◐ LIKELY ACTIVE |
| CSConcrete Supply CO LLC - Chapin | Chapin | — | ◐ LIKELY ACTIVE |
| CSConcrete Supply CO LLC - Greenwood | Greenwood | — | ◐ LIKELY ACTIVE |
| CSConcrete Supply CO LLC Lancaster | Fort Mill | — | ◐ LIKELY ACTIVE |