| WSWorthington Steel CO | Columbus | OH | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| DCDmi Columbus, LLC | Columbus | GA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| EAEnkei America INC | Columbus | IN | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| GTGolden Triangle Mill Service | Columbus | MS | Nonmetallic Mineral Product Manufacturing327992 | 100-499 | ◐ LIKELY ACTIVE |
| ICIsg Columbus Coatings | Columbus | OH | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| AMAbb Motors and Mechanical INC | Columbus | MS | Primary Metal Manufacturing331522 | — | ◐ LIKELY ACTIVE |
| ADAluminum Dynamics - Columbus | Columbus | MS | Primary Metal Manufacturing331313 | 500+ | ◐ LIKELY ACTIVE |
| NMNikkei Mc Aluminum America Incorporated | Columbus | IN | Primary Metal Manufacturing331314 | 20-99 | ◐ LIKELY ACTIVE |
| SMStillwater Mining Company Base Metals Refinery | Columbus | MT | Primary Metal Manufacturing331410 | 20-99 | ◐ LIKELY ACTIVE |
| SMStillwater Mining CO Smelter | Columbus | MT | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| CTCleveland-Cliffs Tubular Components - Columbus | Columbus | IN | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PMPT- Mississippi Investment Castings | Columbus | MS | Primary Metal Manufacturing331512 | 20-99 | ◐ LIKELY ACTIVE |
| SDSteel Dynamics, Inc. - Flat Roll Group - Columbus | Columbus | MS | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| SMStillwater Mining Company Base Metals Smelter | Columbus | MT | Primary Metal Manufacturing331410 | 20-99 | ◐ LIKELY ACTIVE |
| WSWorthington Steel Technical Services | Columbus | OH | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |