| ACAlloy Custom Products, INC. - Treatment Plant #2 | Lafayette | — | ◇ UNVERIFIED |
| ACAlloy Custom Products LLC | Delphi | — | ◇ UNVERIFIED |
 Almco Steel Products CORP | Bluffton | — | ◇ UNVERIFIED |
| AIAmpg Indianapolis | Indianapolis | — | ◇ UNVERIFIED |
| ASAnderson Silver Plating CO INC | Elkhart | — | ◇ UNVERIFIED |
| AIArvin Industries INC | Greenwood | — | ◇ UNVERIFIED |
| APAstro Pak Corporation | Indianapolis | — | ◇ UNVERIFIED |
| ACAtlas Chemical Milling | Elkhart | — | ◇ UNVERIFIED |
| ACAtlas Copco Hurricane LLC | Franklin | — | ◇ UNVERIFIED |
| AAAtmosphere Annealing LLC | North Vernon | — | ◇ UNVERIFIED |
| BABastian Automation Engineering | Greenfield | — | ◇ UNVERIFIED |
| BMBaycote Metal Finishing Site | Mishawaka | — | ◇ UNVERIFIED |
| BIBd Industries INC | Elkhart | — | ◇ UNVERIFIED |
| BABearcat Anodizing | Goshen | — | ◇ UNVERIFIED |
| BBBeckett Bronze CO INC | Muncie | — | ◇ UNVERIFIED |
| BIBig Inch Fabricators & Construction Incorporated | Montezuma | — | ◇ UNVERIFIED |
| BBodycote | Indianapolis | — | ◇ UNVERIFIED |
| BMBootz Manufacturing Company | Evansville | — | ◇ UNVERIFIED |
| BWBp Warehouse | Hammond | — | ◇ UNVERIFIED |
| BSBreed Steering Sys. INC. | Grabill | — | ◇ UNVERIFIED |
| BEBuhrt Engineering Incorporated | Warsaw | — | ◇ UNVERIFIED |
| BEBuhrt Engineering, Inc.-treatment Plant #1 | Warsaw | — | ◇ UNVERIFIED |
| BPBusche Performance Group, Dba Mobex Global - Plant 9 | Albion | — | ◇ UNVERIFIED |
| CCC & C Iron Incorporated | Merrillville | — | ◇ UNVERIFIED |
| CSCives Steel Company, Mid-west Division | Wolcott | — | ◇ UNVERIFIED |
| CRCmc Rebar Muncie North | Muncie | — | ◇ UNVERIFIED |
| CHCold Heading CO | Fremont | — | ◇ UNVERIFIED |
| CICollis, INC. | Evansville | — | ◇ UNVERIFIED |
| CFCommercial Finishing | Indianapolis | — | ◇ UNVERIFIED |
| CFCommercial Finishing CORP | Indianapolis | — | ◇ UNVERIFIED |
| CFCommercial Finishing Corporation | Indianapolis | — | ◇ UNVERIFIED |
| CMContinental Midland, LLC | Valparaiso | — | ◇ UNVERIFIED |
| CLCreative Liquid Coatings INC | Fort Wayne | — | ◇ UNVERIFIED |
| CDCtp, Division of Tue Processing | Indianapolis | — | ◇ UNVERIFIED |
| CDCtp Div Nelson St | Indianapolis | — | ◇ UNVERIFIED |
| CSCtp Sheetmetal | Indianapolis | — | ◇ UNVERIFIED |
| DSDetroit Steel Products CO INC | Morristown | — | ◇ UNVERIFIED |
| DMDiamond Mfg CO Midwest | Michigan City | — | ◇ UNVERIFIED |
 Ditto Sales, INC. | Evansville | — | ◇ UNVERIFIED |
| DSD & S Machine Products, INC | Aurora | — | ◇ UNVERIFIED |
| DMDynatect Manufacturing INC | Valparaiso | — | ◇ UNVERIFIED |
 Electro-spec, INC. | Franklin | — | ◇ UNVERIFIED |
| EMElement Materials Technology | Daleville | — | ◇ UNVERIFIED |
| EEmi | Evansville | — | ◇ UNVERIFIED |
| EIEngineering & Industrial Services Incorporated | Logansport | — | ◇ UNVERIFIED |
| EIEnvirex, INC | Madison | — | ◇ UNVERIFIED |
| EFEta Fabrication, INC. | Avilla | — | ◇ UNVERIFIED |
| EMEvansville Metal Products | Evansville | — | ◇ UNVERIFIED |
| EMExtreme Metal Fab INC | Nashville | — | ◇ UNVERIFIED |
| FCFaultless Caster Division - Fki Ind. | Evansville | — | ◇ UNVERIFIED |
