| KSKenwal Steel Corporation | Burns Harbor | 20–99 | ◐ LIKELY ACTIVE |
| KAKeystone Automotive Industries Inc- Transmetco | Huntington | — | ◐ LIKELY ACTIVE |
| MSMetal Source, LLC (GHR02) | Wabash | 20–99 | ◐ LIKELY ACTIVE |
| MSMetal Source, LLC (GHR07) | Huntington | 20–99 | ◐ LIKELY ACTIVE |
| MTMetal Technologies INC | Bloomfield | — | ◐ LIKELY ACTIVE |
| MMetalx | Auburn | — | ◐ LIKELY ACTIVE |
| MCMid-continent Coal & Coke Company Contractor of US Steel Cor | Gary | — | ◐ LIKELY ACTIVE |
| NMNikkei Mc Aluminum America Incorporated | Columbus | 20–99 | ◐ LIKELY ACTIVE |
| NINitrex INC. | Franklin | — | ◐ LIKELY ACTIVE |
| NCNovelis Corporation | Terre Haute | 100–499 | ◐ LIKELY ACTIVE |
| PTParagon Tube | Fort Wayne | 1–19 | ◐ LIKELY ACTIVE |
| RAReal Alloy Specification, LLC - Wabash, IN | Wabash | 100–499 | ◐ LIKELY ACTIVE |
| RCRichmond Casting Company | Richmond | — | ◐ LIKELY ACTIVE |
| RMRochester Metal Products | Rochester | 100–499 | ◐ LIKELY ACTIVE |
| SLShenango, LLC | Terre Haute | — | ◐ LIKELY ACTIVE |
| SDSteel Dynamics, Inc. - Structural and Rail | Columbia City | 500+ | ◐ LIKELY ACTIVE |
| TTT-b Tube Company Incorporated | Gary | 20–99 | ◐ LIKELY ACTIVE |
| USUS Steel East Chicago | East Chicago | — | ◐ LIKELY ACTIVE |
| USUS Steel - Midwest Plant | Portage | — | ◐ LIKELY ACTIVE |
| WCWabash Castings Incorporated | Wabash | 100–499 | ◐ LIKELY ACTIVE |
| ATAllied Tube and Conduit | Merrillville | — | ◐ LIKELY ACTIVE |
| AIAnduril Industries, INC. | West Lafayette | — | ◐ LIKELY ACTIVE |
| BIBrandenburg Industrial Service CO | Gary | — | ◐ LIKELY ACTIVE |
| BBrinco | Bristol | — | ◐ LIKELY ACTIVE |
| EGEssex Group INC | Fort Wayne | — | ◐ LIKELY ACTIVE |
| LCLake Copper Conductors Hoffman Building | Elkhart | — | ◐ LIKELY ACTIVE |
| NMNational Material Processing | East Chicago | — | ◐ LIKELY ACTIVE |
| NNNsci Nippon Steel & Sumikin Cold Heading Wire Indiana | Shelbyville | — | ◐ LIKELY ACTIVE |
| OTOil Technology INC Contractor of Cleveland-cliffs Burns Harb | Portage | — | ◐ LIKELY ACTIVE |
| PGPhoenix Global Burns Harbor LLC Contractor of Cleveland Clif | Burns Harbor | — | ◐ LIKELY ACTIVE |
| SMSms Mill Services, LLC a Contractor of Cleveland-cliffs Burn | Burns Harbor | — | ◐ LIKELY ACTIVE |
| STSteel Technologies LLC | Greensburg | — | ◐ LIKELY ACTIVE |
| SASuperior Aluminum Alloys LLC | New Haven | — | ◐ LIKELY ACTIVE |
| TCTube City Ims LLC | Portage | — | ◐ LIKELY ACTIVE |
| UTUnion Tube Mill LLC | Union City | — | ◐ LIKELY ACTIVE |
| UGU.s. Granules Corporation | Plymouth | — | ◐ LIKELY ACTIVE |
| VCVoss Clark D/b/a Pgp CORP | Jeffersonville | — | ◐ LIKELY ACTIVE |
| WFWarsaw Foundry Company INC | Warsaw | — | ◐ LIKELY ACTIVE |
| 2R2700 Real Estate Holdings | Elkhart | — | ◇ UNVERIFIED |
| AMAero Metals, INC Dar;ington St | La Porte | — | ◇ UNVERIFIED |
| AFAkron Foundry, INC. | Akron | — | ◇ UNVERIFIED |
| ATAk Tube LLC | Columbus | — | ◇ UNVERIFIED |
| ASAleris Specialty Products, INC. | Hammond | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum LLC | New Castle | — | ◇ UNVERIFIED |
| AAAmcast Automotive Corporation | Marion | — | ◇ UNVERIFIED |
| AAAmcast Automotive - Fremont | Fremont | — | ◇ UNVERIFIED |
| ARAmg Resources CORP | Gary | — | ◇ UNVERIFIED |
| ALAozi-brookville, LLC | Indianapolis | — | ◇ UNVERIFIED |
| AFAuburn Foundry, INC Plant 1 | Auburn | — | ◇ UNVERIFIED |
| BMBanner Medical | Warsaw | — | ◇ UNVERIFIED |