| CCCornerstone Concrete - Edgefield Plant | North Augusta | — | ◇ UNVERIFIED |
| CSCrete Solutions LLC - Rock Hill Plant 13 | Rock Hill | — | ◇ UNVERIFIED |
| CRC R Jackson INC - Pugmill | Florence | — | ◇ UNVERIFIED |
| DCDawkins Concrete Products INC | Hartsville | — | ◇ UNVERIFIED |
| DODawkins On-site Concrete LLC - Dos Portable #33 | Ridgeville | — | ◇ UNVERIFIED |
| DODawkins On-site LLC Glasscock Lafayette | Sumter | — | ◇ UNVERIFIED |
| DODawkins On-site LLC - Riverport | Hardeeville | — | ◇ UNVERIFIED |
| FCFlorence Concrete Products INC Sumter | Sumter | — | ◇ UNVERIFIED |
| FRFords Redi Mix Charleston | Charleston | — | ◇ UNVERIFIED |
| FRFords Redi Mix Concrete | Ladson | — | ◇ UNVERIFIED |
| GRGlasscock Ready Mix Concrete LLC - Divine St Cemco | Sumter | — | ◇ UNVERIFIED |
| GFGuardian Fiberglass INC | Winnsboro | — | ◇ UNVERIFIED |
| HBHanson Brick East LLC | Blacksburg | — | ◇ UNVERIFIED |
| HCHardaway Concrete CO INC Plt 10 | Irmo | — | ◇ UNVERIFIED |
| HCHardaway Concrete Company Columbia Plant #2 | Columbia | — | ◇ UNVERIFIED |
| HCHardaway Concrete Company - Powdersville | Powdersville | — | ◇ UNVERIFIED |
| HCHardaway Concrete Company - Simpsonville | West Columbia | — | ◇ UNVERIFIED |
| HCHydro Conduit LLC | Aynor | — | ◇ UNVERIFIED |
| IMIndustrial Minerals | Kings Creek | — | ◇ UNVERIFIED |
| KRKnight Redi-mix INC. - Plant 4 | Summerville | — | ◇ UNVERIFIED |
| KRKnights Redi-mix Concrete Plant 2 | Walterboro | — | ◇ UNVERIFIED |
| KRKnight's Redi Mix Jedburg Plant 4 | Summerville | — | ◇ UNVERIFIED |
| KRKnights Redi-mix Midlands LLC Plant 6 Blythewood | Blythewood | — | ◇ UNVERIFIED |
| KMKrm Midlands LLC Irmo Plant 7 | Irmo | — | ◇ UNVERIFIED |
| KMKrm Midlands LLC Lexington Plant 9 | Lexington | — | ◇ UNVERIFIED |
| KMKrm Midlands LLC - Lugoff Plant 8 | Lugoff | — | ◇ UNVERIFIED |
| KMKrm Midlands LLC Pineview Plant 3 | North Charleston | — | ◇ UNVERIFIED |
| KMKrm Midlands, Llc-plant 3 | Columbia | — | ◇ UNVERIFIED |
| KMKrm Midlands, Llc-plant 8 | Lugoff | — | ◇ UNVERIFIED |
| KSKrm South LLC - Hardeeville Plant 16 | Hardeeville | — | ◇ UNVERIFIED |
| KSKrm South - Plant 15 | Ridgeland | — | ◇ UNVERIFIED |
| LBLafarge Building Materials Aiken Redi Mix | Aiken | — | ◇ UNVERIFIED |
| LCLanier Construction:lexington Concrete | Lexington | — | ◇ UNVERIFIED |
| LPLongleaf Packging | Vance | — | ◇ UNVERIFIED |
| MTMark Twain Redi-mix | Williamston | — | ◇ UNVERIFIED |
| MIMesser Industries - Closed | Greer | — | ◇ UNVERIFIED |
| MIMetrocon INC | Central | — | ◇ UNVERIFIED |
| MIMetrocon INC | Travelers Rest | — | ◇ UNVERIFIED |
| MIMetrocon Inman Plant | Inman | — | ◇ UNVERIFIED |
| MMMetromont Materials CORP Holly Hill | Holly Hill | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation Belton | Anderson | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation Richburg | Richburg | — | ◇ UNVERIFIED |
| MMetromont:whitehorse | Greenville | — | ◇ UNVERIFIED |
| MCMorgan Concrete CO Pickens | Sunset | — | ◇ UNVERIFIED |
| OMOldcastle Matt Stone Holdings Incorporated | Cowpens | — | ◇ UNVERIFIED |
| OMOpta Minerals Harseeville Plant | Hardeeville | — | ◇ UNVERIFIED |
| PDPee Dee Ready Mix | Effingham | — | ◇ UNVERIFIED |
| PCPiedmont Concrete:spartanburg | Spartanburg | — | ◇ UNVERIFIED |
| P8Plant 84 - Florence | Florence | — | ◇ UNVERIFIED |
| PIPpg Industries Fiber Glass Products INC | Chester | — | ◇ UNVERIFIED |
