| GSGKN Sinter Metals- Tool & Die | Germantown | 20–99 | ◐ LIKELY ACTIVE |
| ICInvest Cast Inc - Wisconsin | Osceola | 20–99 | ◐ LIKELY ACTIVE |
| MMMercury Marine Fond du Lac | Fond Du Lac | 500+ | ◐ LIKELY ACTIVE |
| MFMid-City Foundry Co. - Milwaukee Division | Milwaukee | 20–99 | ◐ LIKELY ACTIVE |
| MFMilwaukee Forgetech INC. | Milwaukee | — | ◐ LIKELY ACTIVE |
| NCNucor Cold Finish Wisconsin | Oak Creek | 20–99 | ◐ LIKELY ACTIVE |
| PIPRE-heat, Inc. | Oostburg | 20–99 | ◐ LIKELY ACTIVE |
| SRSpecialty Rolled Metals LLC Beaver Dam WI | Beaver Dam | 20–99 | ◐ LIKELY ACTIVE |
| WFWaukesha Foundry INC | Waukesha | — | ◐ LIKELY ACTIVE |
 Wisconsin Oven CORP | East Troy | — | ◐ LIKELY ACTIVE |
| ACArntzen Corporation | Sharon | — | ◐ LIKELY ACTIVE |
| BMB&b Metals Processing CO INC | Newton | — | ◐ LIKELY ACTIVE |
| AFAfk Foundry | Ripon | — | ◇ UNVERIFIED |
| AWAlcoa Wheel Products | Beloit | — | ◇ UNVERIFIED |
| AMAmpco Metal Manufacturing INC | Milwaukee | — | ◇ UNVERIFIED |
 Apache Stainless Equipment CORP | Plover | — | ◇ UNVERIFIED |
| BMBassett Mechanical INC | Kaukauna | — | ◇ UNVERIFIED |
| BFBerntsen Foundry | Phelps | — | ◇ UNVERIFIED |
| BIBrillion Iron Works, INC. | Brillion | — | ◇ UNVERIFIED |
| CEChart Energy & Chemical INC | La Crosse | — | ◇ UNVERIFIED |
| CWCharter Wire Division CO | Milwaukee | — | ◇ UNVERIFIED |
| CBChippewa Brass & Aluminum Foundry LTD | Chippewa Falls | — | ◇ UNVERIFIED |
| CIChrist Iron Works, INC. | Kenosha | — | ◇ UNVERIFIED |
| CACnh America LLC | Racine | — | ◇ UNVERIFIED |
| CICrucible INC Trent Tube Div Plt 1 | East Troy | — | ◇ UNVERIFIED |
| DMDiversified Machine Milwaukee LLC | Milwaukee | — | ◇ UNVERIFIED |
| GRGleason Roll Off & Recycling INC | Racine | — | ◇ UNVERIFIED |
| GBGrede - Berlin | Berlin | — | ◇ UNVERIFIED |
| HIHufcor, INC. | Janesville | — | ◇ UNVERIFIED |
| ICIntermet CORP - Racine Plt (former) | Sturtevant | — | ◇ UNVERIFIED |
| KAKoenig and Vitts Mirro Plnt 5 | Manitowoc | — | ◇ UNVERIFIED |
| KIKramer International | Milwaukee | — | ◇ UNVERIFIED |
 Luvata Appleton LLC - Sunwire Facility | Kimberly | — | ◇ UNVERIFIED |
| MTMetal Technologies, Inc.-west Allis Duct | Milwaukee | — | ◇ UNVERIFIED |
| MMMidwest Mfg Prehung Plant | Eau Claire | — | ◇ UNVERIFIED |
| MGMilwaukee Gray Iron, LLC | West Allis | — | ◇ UNVERIFIED |
| MCMotor Castings CO | Milwaukee | — | ◇ UNVERIFIED |
| NFNeenah Foundry CO - Plants 2 and 3 (w2179) | Neenah | — | ◇ UNVERIFIED |
| NCNucor Cold Finish Wisconsin INC | Oak Creek | — | ◇ UNVERIFIED |
| PIPace Industries Est Division | Grafton | — | ◇ UNVERIFIED |
| PIPace Industries - Mole Creek | Grafton | — | ◇ UNVERIFIED |
| POPhillips-medisize - Origen | Menomonie | — | ◇ UNVERIFIED |
| PCPortage Casting & Mold INC | Portage | — | ◇ UNVERIFIED |
| RSRacine Steel Castings Div | Racine | — | ◇ UNVERIFIED |
| RAReal Alloy Recycling INC - Racine Plant | Mount Pleasant | — | ◇ UNVERIFIED |
| RSRiver Steel INC | La Crosse | — | ◇ UNVERIFIED |
| RMRoloff Mfg CORP | Kaukauna | — | ◇ UNVERIFIED |
| SIScot Industries | Muscoda | — | ◇ UNVERIFIED |
| SPShiloh - Pleasant Prairie | Kenosha | — | ◇ UNVERIFIED |
| SGSouthwire Genesis Cable | Pleasant Prairie | — | ◇ UNVERIFIED |
