| KCKendon Corporation | Muncie | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| KEKimball Electronices Group Auburn | Auburn | IN | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| KWKokoku Wire Industries Corporation | South Bend | IN | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| KCKroot CORP | Columbus | IN | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| LCLake Copper Conductors Hoffman Building | Elkhart | IN | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| LCLake Copper Conductors LLC | Elkhart | IN | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| MIMetals Investment Trust LTD. | East Chicago | IN | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| MSMetal Source LLC | Wabash | IN | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| MCMid-continent Coal & Coke | Portage | IN | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| MMMid-west Metal Products | Muncie | IN | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| PMPatrick Metals | Mishawaka | IN | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| PPPhillips Patterns & Castings, INC | Muncie | IN | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| PAPosco - Aapc | Jeffersonville | IN | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| PPPrecision Propellers | Indianapolis | IN | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| RMRea Magnet Wire CO INC | Fort Wayne | IN | Primary Metal Manufacturing331422 | — | ◇ UNVERIFIED |
| RMRefined Metals CORP | Indianapolis | IN | Primary Metal Manufacturing331000 | — | ◇ UNVERIFIED |
| RERepublic Engineered Products, LLC - Gary Dunes Plant | Gary | IN | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| RJR J R Drying, INC. | East Chicago | IN | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| RFRmg Foundry | Mishawaka | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| RSRoss Sand Casting Industries, Inc., Plan | Winchester | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| SBScott Brass, INC. | New Carlisle | IN | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| SLSouthwire LLC | Bremen | IN | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| SWSteel Warehouse CO LLC | South Bend | IN | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| SCSterling Casting | Bluffton | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| VCVoss Clark D/b/a Pgp CORP | Jeffersonville | IN | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WAWabash Alloys, LLC | Tipton | IN | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| YMYamaha Marine Precision Propellers INC | Indianapolis | IN | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| AMAdvanced Materials Development | Columbia City | IN | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| ATAllied Tube & Conduit Hobart Indiana | Merrillville | IN | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| AUArcelormittal USA Research LLC | East Chicago | IN | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ABArdmore Bldg B | Ft Wayne | IN | Primary Metal Manufacturing331222 | 100-499 | ◐ LIKELY ACTIVE |
| ABArdmore Bldg G | Fort Wayne | IN | Primary Metal Manufacturing331222 | 100-499 | ◐ LIKELY ACTIVE |
| ABArdmore Bldg H | Fort Wayne | IN | Primary Metal Manufacturing331222 | 100-499 | ◐ LIKELY ACTIVE |
| AAvionics | Fort Wayne | IN | Primary Metal Manufacturing331222 | 100-499 | ◐ LIKELY ACTIVE |
| BPBatesville Products Inc Foundry | Aurora | IN | Primary Metal Manufacturing331313 | 20-99 | ◐ LIKELY ACTIVE |
| BMBull Moose Tube Elkhart | Elkhart | IN | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| CMCablecraft Motion Controls - New Haven IN | New Haven | IN | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| CCCleveland Cliffs | Rockport | IN | Primary Metal Manufacturing331221 | 500+ | ◐ LIKELY ACTIVE |
| CCCleveland-Cliffs - Corporate Burns Harbor - Corporate | Burns Harbor | IN | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| CNCleveland-Cliffs - New Carlisle | New Carlisle | IN | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| CTCleveland-Cliffs Tubular Components - Columbus | Columbus | IN | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| DCDalton Corporation | Warsaw | IN | Primary Metal Manufacturing331511 | 100-499 | ▲ REPORTED CLOSED |
| DODivision Office and Engineering Center | Richmond | IN | Primary Metal Manufacturing331420 | 100-499 | ◐ LIKELY ACTIVE |
| EEcoBlock | Gary | IN | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| ECEdw C Levy Co dba Whitesville Mill Service | Crawfordsville | IN | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| EIElkhart IN | Elkhart | IN | Primary Metal Manufacturing331318 | 20-99 | ◐ LIKELY ACTIVE |
| FWFort Wayne Metals TEC | Fort | IN | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| FFoundry | Muncie | IN | Primary Metal Manufacturing331529 | 1-19 | ◐ LIKELY ACTIVE |
| GAGeneral Aluminum LLC, Fremont | Fremont | IN | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| GMGeneral Motors Bedford | Bedford | IN | Primary Metal Manufacturing331523 | 500+ | ◐ LIKELY ACTIVE |