| PCPort City Die Cast | Muskegon | — | ◇ UNVERIFIED |
| PRPrairie Ronde Realty Company | Dowagiac | — | ◇ UNVERIFIED |
| PMPrecious Metals Refiners LLC | Redford | — | ◇ UNVERIFIED |
| PPProcess Prototype INC | Romulus | — | ◇ UNVERIFIED |
| PVPro V Enterprises | Dearborn | — | ◇ UNVERIFIED |
| QWQuality Wire Processing INC | Taylor | — | ◇ UNVERIFIED |
| RAReal Alloy Specification, LLC | Saginaw | — | ◇ UNVERIFIED |
| RRRegal Recycling LLC | Howell | — | ◇ UNVERIFIED |
| SISamuel-whittar INC | Detroit | — | ◇ UNVERIFIED |
| STSequoia Tool INC | Clinton Township | — | ◇ UNVERIFIED |
| SSpacerak | Marlette | — | ◇ UNVERIFIED |
| SFSparta Foundry INC | Sparta | — | ◇ UNVERIFIED |
| SFSturgis Foundry Corporation | Sturgis | — | ◇ UNVERIFIED |
| TITepco INC | South Lyon | — | ◇ UNVERIFIED |
| TPThreaded Products CO | Richmond | — | ◇ UNVERIFIED |
| TATi Automotive Systems | Auburn Hills | — | ◇ UNVERIFIED |
| TTransform-shelby | Shelby Township | — | ◇ UNVERIFIED |
| TMTri-way Manufacturing | Roseville | — | ◇ UNVERIFIED |
| UCUltimate Casting and Machining | West Branch | — | ◇ UNVERIFIED |
| UTUniversal Tube | Rochester Hills | — | ◇ UNVERIFIED |
| UNUp North Industries LLC | Petoskey | — | ◇ UNVERIFIED |
| VCVillage Castings CO | Caseville | — | ◇ UNVERIFIED |
Waupaca Foundry, INC. - Plant 1 (ironwood) | Ironwood | — | ◇ UNVERIFIED |
| WWWayne Wire Cloth Prod | Kalkaska | — | ◇ UNVERIFIED |
| WDWolverine Die Cast-hoover Rd | Warren | — | ◇ UNVERIFIED |
| WSWorthington Specialty Processing - Canton | Canton | — | ◇ UNVERIFIED |
| YSYale Steel INC | Yale | — | ◇ UNVERIFIED |
| AAludyne | Montague | 100–499 | ◐ LIKELY ACTIVE |
| ASAmerican SpiralWeld Great Lakes Division | Flint | 20–99 | ◐ LIKELY ACTIVE |
| AOAMG Operations LLC - White Cloud Location | White Cloud | 1–19 | ◐ LIKELY ACTIVE |
| ABAnchor Bay Steel, LLC | Southfield | — | ◐ LIKELY ACTIVE |
Artiflex Manufacturing Eau Claire | Eau Claire | 1–19 | ◐ LIKELY ACTIVE |
| ACAuto Cast Inc | Grandville | 20–99 | ◐ LIKELY ACTIVE |
| ACAutomotive Center | Troy | 20–99 | ◐ LIKELY ACTIVE |
| BPBar Processing Warren | Warren | 20–99 | ◐ LIKELY ACTIVE |
| BCBay Cast Foundry, LLC | Bay City | 20–99 | ◐ LIKELY ACTIVE |
| BABonnell Aluminum (Niles), LLC | Niles | 100–499 | ◐ LIKELY ACTIVE |
| BABowers Aluminum | Battle Creek | 20–99 | ◐ LIKELY ACTIVE |
| BTBWD Technologies | Dearborn | 1–19 | ◐ LIKELY ACTIVE |
| CSCapital steel and wire, Eden rd | Mason | 1–19 | ◐ LIKELY ACTIVE |
| CSCapital steel and wire, Hull Rd | Mason | 20–99 | ◐ LIKELY ACTIVE |
| CSCapital steel and wire inc | Dewitt | 20–99 | ◐ LIKELY ACTIVE |
| CSCapital steel and wire, Raycraft | Ithaca | 1–19 | ◐ LIKELY ACTIVE |
| CDCascade Die Casting Group, Inc. Great Lakes Division Plant 2 | Sparta | 20–99 | ◐ LIKELY ACTIVE |
Combined Metals Company LLC - Ann Arbor | Ann Arbor | 20–99 | ◐ LIKELY ACTIVE |
| CCCosma Casting of Michigan | Battle Creek | 100–499 | ◐ LIKELY ACTIVE |
| CDCurbs & Damper Products Inc. | Roseville | 1–19 | ◐ LIKELY ACTIVE |
| DFDock Foundry LLC dba Three Rivers Gray Iron | Three Rivers | 100–499 | ◐ LIKELY ACTIVE |
| EAEagle Aluminum Cast Products Sand Mold | Muskegon | 1–19 | ◐ LIKELY ACTIVE |
| ECEdw C Levy Co dba Edw C Levy Co (Detroit) | Detroit | 20–99 | ◐ LIKELY ACTIVE |