| SFSoutheast Finishing Highway 65-closed | Conway | — | ◇ UNVERIFIED |
| SMSouthern Miscellaneous Columbia LLC | West Columbia | — | ◇ UNVERIFIED |
| SPSouthern Plastics | West Columbia | — | ◇ UNVERIFIED |
| SSSpartanburg Stainless Products | Spartanburg | — | ◇ UNVERIFIED |
| SSS & S Welding & Fabrication LLC | Lexington | — | ◇ UNVERIFIED |
| SCStarrett Company-evans Rule Division | North Charleston | — | ◇ UNVERIFIED |
Steelfab, INC. | York | — | ◇ UNVERIFIED |
| SHSteel Heddle LLC | Greenville | — | ◇ UNVERIFIED |
| SRSteel Related Technology | Huger | — | ◇ UNVERIFIED |
| SIStoll Industries, INC. | Abbeville | — | ◇ UNVERIFIED |
| SCStrick Corporation | Abbeville | — | ◇ UNVERIFIED |
| TSTechno Steel LLC | Darlington | — | ◇ UNVERIFIED |
| TLTerex Light Contruction | Rock Hill | — | ◇ UNVERIFIED |
| TBT&s Brass & Bronze Works INC | Travelers Rest | — | ◇ UNVERIFIED |
| VGVelux Greenwood LLC -gronskov Facility | Greenwood | — | ◇ UNVERIFIED |
| VWVoyage Warehousing LLC | Greenwood | — | ◇ UNVERIFIED |
| WSWare Shoals Industries Incorporated | Ware Shoals | — | ◇ UNVERIFIED |
| WWastequip/lm | Duncan | — | ◇ UNVERIFIED |
| WLWastequip Lm Industries Greer Plant | Greer | — | ◇ UNVERIFIED |
| WBWilson Brothers Sand CO Smith Mine | Leesville | — | ◇ UNVERIFIED |
| ZCZeus Company Llc-zeus Engineering Center | Orangeburg | — | ◇ UNVERIFIED |
| 0K00060239-23965 Kci Tech - Columbia, Sc | Columbia | 20–99 | ◐ LIKELY ACTIVE |
| 1T1 Tungsten Trail | Travelers Rest | 100–499 | ◐ LIKELY ACTIVE |
| 4F450-ram Fabrication-ridgeland | Ridgeland | 1–19 | ◐ LIKELY ACTIVE |
| AIAalberts Integrated Piping Systems Americas | Pageland | 100–499 | ◐ LIKELY ACTIVE |
| AIAalberts Integrated Piping Systems Americas, Inc. - Pageland Bypass Facility | Pageland | 100–499 | ◐ LIKELY ACTIVE |
| ABAccurate Brazing Garlington | Greenville | 20–99 | ◐ LIKELY ACTIVE |
| ASAddison Support Service LLC | Columbia | — | ◐ LIKELY ACTIVE |
| AMAlpha Metalworks, LLC. | Ladson | — | ◐ LIKELY ACTIVE |
| AMArdagh Metal Packaging - Bishopville | Bishopville | 100–499 | ◐ LIKELY ACTIVE |
| AEASC Equipment Company dba Imperial Metals | Batesburg - Leesville | 20–99 | ◐ LIKELY ACTIVE |
| ALASCO L.P. - Aiken | Aiken | 100–499 | ◐ LIKELY ACTIVE |
| AWAstroshield Window Systems, LLC | Goose Creek | — | ◐ LIKELY ACTIVE |
| BMBenchmark Machining Inc | Summerville | 1–19 | ◐ LIKELY ACTIVE |
| BTBits to Chips LLC | Fort Mill | — | ◐ LIKELY ACTIVE |
| BSBlackhorse Steel Works | Denmark | 1–19 | ◐ LIKELY ACTIVE |
| BSB & S Machine Tool, INC. | Aiken | — | ◐ LIKELY ACTIVE |
| CLCaballus LLC | Rock Hill | — | ◐ LIKELY ACTIVE |
| CSCablecraft - St. Matthews, Sc | Saint Matthews | 20–99 | ◐ LIKELY ACTIVE |
| CHCarolina Heavy Steel, LLC | Ridgeville | — | ◐ LIKELY ACTIVE |
| CICarolina Integrated Solutions, Inc. | Spartanburg | 20–99 | ◐ LIKELY ACTIVE |
| COCbc of Charleston INC | North Charleston | — | ◐ LIKELY ACTIVE |
| CCCDI Charlotte | Rock Hill | 100–499 | ◐ LIKELY ACTIVE |
| CIChart, Inc. Southeast Repair Facility | Richburg | 1–19 | ◐ LIKELY ACTIVE |
| CCheraw | Cheraw | 100–499 | ◐ LIKELY ACTIVE |
| CSCitadel Shipworks, LLC | Mount Pleasant | — | ◐ LIKELY ACTIVE |
| CRCMC Rebar Columbia | Columbia | 20–99 | ◐ LIKELY ACTIVE |
| CSCMC Southern Post South Carolina | Cayce | 20–99 | ◐ LIKELY ACTIVE |
| CMCMMC Machine, LLC | North Charleston | 20–99 | ◐ LIKELY ACTIVE |
| CNCompX National | Greenville | 100–499 | ◐ LIKELY ACTIVE |