| QBQuikrete - Bowman, Sc Plant | Bowman | — | ◇ UNVERIFIED |
| QCQuikrete - Carolina Plant | West Columbia | — | ◇ UNVERIFIED |
| RCRc Construction CO INC | Charleston | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete #84 Florence-closed | Florence | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete #85 Marion | Marion | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO | Columbia | — | ◇ UNVERIFIED |
| RMReady Mixed Concrete CO Portable Plt | Georgetown | — | ◇ UNVERIFIED |
| RRReflective Recycling of Sc LLC | Pacolet | — | ◇ UNVERIFIED |
| RCRichtex Corporation Ninety Six Plant 9 | Ninety Six | — | ◇ UNVERIFIED |
| RCRinker Columbia Pipe | Columbia | — | ◇ UNVERIFIED |
| RMRinker Myrtle Beach Pipe | Aynor | — | ◇ UNVERIFIED |
| SSScotts Sierra:travelers Rest-closed | Travelers Rest | — | ◇ UNVERIFIED |
| SPSc Prestress Kingstree | Kingstree | — | ◇ UNVERIFIED |
| SPSc Prestress Lakecity | Lake City | — | ◇ UNVERIFIED |
| SPSite Prep INC of Nc | Orangeburg | — | ◇ UNVERIFIED |
| SPSite Prep INC of Nc | Gaston | — | ◇ UNVERIFIED |
| SCSouth Carolina Prestress CORP | Florence | — | ◇ UNVERIFIED |
| SASrm Aiken Plant | Aiken | — | ◇ UNVERIFIED |
| SBSrm - Bluffton #344 | Bluffton | — | ◇ UNVERIFIED |
| SGSrm Georgetown Plant | Georgetown | — | ◇ UNVERIFIED |
| SGSrm Georgetown Plant | Georgetown | — | ◇ UNVERIFIED |
| SMSrm Myrtle Beach Plant | Myrtle Beach | — | ◇ UNVERIFIED |
| SRSrm Ridgeland Plant | Ridgeland | — | ◇ UNVERIFIED |
| SLStevenson-weir Lockhart | Union | — | ◇ UNVERIFIED |
| SSStevenson-weir Southern - Greenville Plant | Greenville | — | ◇ UNVERIFIED |
| SLStevenson-weir/southern LLC - Sws Vince Hagan | Fort Lawn | — | ◇ UNVERIFIED |
| SLS&w Little River Plant | Little River | — | ◇ UNVERIFIED |
| SRS&w Ready Mix Concrete | Little River | — | ◇ UNVERIFIED |
| SRS&w Ready Mix Concrete Company LLC | Clinton | — | ◇ UNVERIFIED |
| SCSws Concrete-clover Plant | Clover | — | ◇ UNVERIFIED |
| SCSws Concrete-richburg Plant | Richburg | — | ◇ UNVERIFIED |
| SCSws Concrete-rock Hill Plant | Rock Hill | — | ◇ UNVERIFIED |
| TCThomas Concrete | Fort Mill | — | ◇ UNVERIFIED |
| TCThomas Concrete Anderson | Anderson | — | ◇ UNVERIFIED |
| TCThomas Concrete Charleston King St. | Charleston | — | ◇ UNVERIFIED |
| TCThomas Concrete Chester | Chester | — | ◇ UNVERIFIED |
| TCThomas Concrete Conway West | Conway | — | ◇ UNVERIFIED |
| TCThomas Concrete Gaston | Gaston | — | ◇ UNVERIFIED |
| TCThomas Concrete - Little River | Little River | — | ◇ UNVERIFIED |
| TCThomas Concrete of Carolina INC South Plant | Fort Mill | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina INC - Fountain Inn | Fountain Inn | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina INC – Greenville Plant | Greenville | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina INC Hopkins | Columbia | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina INC Lexington | Lexington | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina INC Moore Plant | Moore | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina INC North Myrtle Beach | Conway | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina INC - Okatie | Ridgeland | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina Incorporated Seneca | Seneca | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina INC Statewide | Ludowici | — | ◇ UNVERIFIED |
| TCThomas Concrete of South Carolina - Moonville Plant | Pelzer | — | ◇ UNVERIFIED |
