| MFMetal Forming Industries INC | Russellville | — | ◇ UNVERIFIED |
| MSMidwestern Steel Fabricators Chicago LLC | Hammond | — | ◇ UNVERIFIED |
| MMMid-west Metal Products | Muncie | — | ◇ UNVERIFIED |
| MPMidwest Pipe Coating | Schererville | — | ◇ UNVERIFIED |
| MTMidwest Tankworks a Div Mississippi Tank CO | Vincennes | — | ◇ UNVERIFIED |
| MIMiller Industrial | Kokomo | — | ◇ UNVERIFIED |
| MPMiller Plating & Metal Finishing LLC | Evansville | — | ◇ UNVERIFIED |
| MWMi Windows & Doors LLC | Brazil | — | ◇ UNVERIFIED |
| MCModineer Coatings Division South | South Bend | — | ◇ UNVERIFIED |
| MMModine Mfg/laporte/pemberville | La Porte | — | ◇ UNVERIFIED |
| MSMunster Steel Company | Munster | — | ◇ UNVERIFIED |
| NANapa Auto Parts Machine Shop | Plymouth | — | ◇ UNVERIFIED |
| NTNational Tube Form | Ft Wayne | — | ◇ UNVERIFIED |
| NGNelson Global - Fortune Circle | Indianapolis | — | ◇ UNVERIFIED |
| NINeo Industries Indiana INC | Portage | — | ◇ UNVERIFIED |
| PIPatrick Industries INC | Bristol | — | ◇ UNVERIFIED |
| PSPraxair Surface Technologies, INC. | Indianapolis | — | ◇ UNVERIFIED |
| PMPrecise Manufacturing | Ft Wayne | — | ◇ UNVERIFIED |
| PPPrecision Painting Incorporated | Wakarusa | — | ◇ UNVERIFIED |
| PPProduction Paint Stripping | Batesville | — | ◇ UNVERIFIED |
| PQPti Quality Containment Solutions LLC | Jeffersonville | — | ◇ UNVERIFIED |
| QFQuality Frames, INC. | Elkhart | — | ◇ UNVERIFIED |
| RARaydar & Associates | Odon | — | ◇ UNVERIFIED |
| RGR G Applegate Steel Company Incorporated | Saratoga | — | ◇ UNVERIFIED |
 Rockwell Automation | Columbus | — | ◇ UNVERIFIED |
| SLSchlage Lock Company LLC | Indianapolis | — | ◇ UNVERIFIED |
| SCSchwab Corporation | Cannelton | — | ◇ UNVERIFIED |
| SCSealy Components Group | Rensselaer | — | ◇ UNVERIFIED |
| SPShelbyville Plating & Polishing Company | Shelbyville | — | ◇ UNVERIFIED |
| SCSilgan Container CORP | Laporte | — | ◇ UNVERIFIED |
| SCSmc Corporation of America | Indianapolis | — | ◇ UNVERIFIED |
| SISpectronics INC | Evansville | — | ◇ UNVERIFIED |
| SPState Plating | Elwood | — | ◇ UNVERIFIED |
| SBSterling Boiler and Mechanical, INC. | Evansville | — | ◇ UNVERIFIED |
| SBSterling Boiler & Mechanical LLC | Evansville | — | ◇ UNVERIFIED |
| TAT and J Plating INC | Marion | — | ◇ UNVERIFIED |
| TMTaylor Made Systems | Kendallville | — | ◇ UNVERIFIED |
| TCThe Canam Steel Corporation | Lafayette | — | ◇ UNVERIFIED |
| TRThree Rivers Plating | Fort Wayne | — | ◇ UNVERIFIED |
| TITotal Industries | South Bend | — | ◇ UNVERIFIED |
| TCTpc Ctp Sheeetmetal Division | Indianapolis | — | ◇ UNVERIFIED |
| TMTrident Machine Technologies, INC. | Hammond | — | ◇ UNVERIFIED |
| TSTru-form Steel & Wire INC. | Hartford City | 20–99 | ◇ UNVERIFIED |
| UTUnion Tank Car Company | East Chicago | — | ◇ UNVERIFIED |
| VCVentra CORP | Columbus | — | ◇ UNVERIFIED |
| VIVitco INC | Nappanee | — | ◇ UNVERIFIED |
| WEWarsaw Electropolishing | Warsaw | — | ◇ UNVERIFIED |
| WMWastequip Manufacturing Company LLC Dba Galbreath LLC Plant #2 East | Winamac | — | ◇ UNVERIFIED |
| WPWaupaca Pallet, INC. | Troy | — | ◇ UNVERIFIED |
| WPWhitley Products, INC. | Plymouth | — | ◇ UNVERIFIED |
