| WSWabash Steel Company LLC | Vincennes | 20–99 | ◐ LIKELY ACTIVE |
| WIWare Industries, INC. D/b/a Marino/ware | East Chicago | 100–499 | ◐ LIKELY ACTIVE |
| WMWenzel Metal Spinning, INC. | Fremont | 20–99 | ◐ LIKELY ACTIVE |
| WMWiley Metal Fabricating INC | Marion | — | ◐ LIKELY ACTIVE |
| WIWilloughby Industries | Indianapolis | 100–499 | ◐ LIKELY ACTIVE |
| ALAcuity Lighting Group, INC. | Crawfordsville | — | ◐ LIKELY ACTIVE |
Almco Steel Products CORP | Bluffton | — | ◐ LIKELY ACTIVE |
| ARA. Raymond Tinnerman Manufacturing, INC | Logansport | — | ◐ LIKELY ACTIVE |
| AGAzz Galvanizing - Hamilton | Hamilton | — | ◐ LIKELY ACTIVE |
| AGAzz Galvanizing Services Plymouth | Plymouth | — | ◐ LIKELY ACTIVE |
| BMBest Metal Finishing | Osgood | — | ◐ LIKELY ACTIVE |
| BIBig Inch Fabricators & Construction Incorporated | Montezuma | 20–99 | ◐ LIKELY ACTIVE |
| BBBremen Bearings Company Incorporated | Bremen | — | ◐ LIKELY ACTIVE |
| CUCanpack US LLC | Muncie | — | ◐ LIKELY ACTIVE |
Chief Industries INC | Rensselaer | — | ◐ LIKELY ACTIVE |
| CSCives Steel Company Midwest Division | Wolcott | — | ◐ LIKELY ACTIVE |
| CCCook Compression | Jeffersonville | — | ◐ LIKELY ACTIVE |
| CBCrown Beverage Packaging | Crawfordsville | — | ◐ LIKELY ACTIVE |
| DMDanco Medical | Warsaw | — | ◐ LIKELY ACTIVE |
| ECEaton Corporation | South Bend | — | ◐ LIKELY ACTIVE |
| EPElkhart Products CORP | Elkhart | — | ◐ LIKELY ACTIVE |
| FFFontana Fasteners Incorporated | Frankfort | — | ◐ LIKELY ACTIVE |
| HRHill Rom CO INC Plating Plant | Batesville | — | ◐ LIKELY ACTIVE |
| IRIngersoll Rand Von Duprin | Indianapolis | — | ◐ LIKELY ACTIVE |
| IMInox Market America | Muncie | 1–19 | ◐ LIKELY ACTIVE |
| KKKem Krest Mag 1 | Elkhart | 500+ | ◐ LIKELY ACTIVE |
| KIKennametal Incorporated | New Albany | — | ◐ LIKELY ACTIVE |
| LPLci Plant 58 | Elkhart | — | ◐ LIKELY ACTIVE |
| LSLenex Steel | Indianapolis | — | ◐ LIKELY ACTIVE |
| LSLenex Steel | Terre Haute | — | ◐ LIKELY ACTIVE |
| MLMetaldyne LLC | North Vernon | — | ◐ LIKELY ACTIVE |
| MOMicromatic Operations INC | Berne | 20–99 | ◐ LIKELY ACTIVE |
| NANachi America INC | Greenwood | — | ◐ LIKELY ACTIVE |
| PHParker Hannifin CORP - Fluid Connector Group - Fsc Div | Albion | — | ◐ LIKELY ACTIVE |
| PMPioneer Metal Finishing Llc., Nimet Division | South Bend | — | ◐ LIKELY ACTIVE |
| PFPortland Forge, an Allegheny Teledyne Company | Portland | — | ◐ LIKELY ACTIVE |
| PMPrecoat Metals | Portage | — | ◐ LIKELY ACTIVE |
| PMPrecoat Metals | La Porte | — | ◐ LIKELY ACTIVE |
| PPProcoat Products | Madison | 1–19 | ◐ LIKELY ACTIVE |
| RPRbc Precision Products | Bremen | — | ◐ LIKELY ACTIVE |
| RFRightway Fasteners, INC | Columbus | — | ◐ LIKELY ACTIVE |
| SCSilgan Containers Manufacturing Corpora | Hammond | — | ◐ LIKELY ACTIVE |
| SDSteel Dynamics INC | Jeffersonville | — | ◐ LIKELY ACTIVE |
| TATower Automotive Products INC | Auburn | — | ◐ LIKELY ACTIVE |
| TSToyoshima Special Steel USA | Indianapolis | 1–19 | ◐ LIKELY ACTIVE |
| TPTriplex Plating INC. | Michigan City | — | ◐ LIKELY ACTIVE |
| WCWynright Corporationnp | Hobart | — | ◐ LIKELY ACTIVE |
| YDYellow Dog Anodizing | Elkhart | — | ◐ LIKELY ACTIVE |
Dubose Strapping Inc.-treatment Plant #1 | Crawfordsville | — | ◇ UNVERIFIED |
| MMMidstate Manufacturing Corporation | Franklin | 1–19 | ◇ UNVERIFIED |