| DSDw-national Standard-niles, LLC | Niles | MI | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| AWAlcotec Wire CORP | Traverse City | MI | Primary Metal Manufacturing331318 | 20-99 | ◐ LIKELY ACTIVE |
| ALAlutech LLC | Benton Harbor | MI | Primary Metal Manufacturing331523 | — | ◐ LIKELY ACTIVE |
| AMAmeriti Manufacturing Company | Detroit | MI | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| ACAuto Cast Inc | Grandville | MI | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| BDBlue Diamond Steel Casting,inc. | Pigeon | MI | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| BLBrazeway, LLC Adrian | Adrian | MI | Primary Metal Manufacturing331316 | 20-99 | ◐ LIKELY ACTIVE |
| CEClark Engineering Company | Owosso | MI | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| CECorsair Engineering INC | Flint | MI | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| CDCurbs & Damper Products Inc. | Roseville | MI | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| DND & N Bending CORP. | Romeo | MI | Primary Metal Manufacturing331491 | 100-499 | ◐ LIKELY ACTIVE |
Gerdau Macsteel, INC. | Jackson | MI | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| GPGf Proto-type Plaster INC | Fraser | MI | Primary Metal Manufacturing331529 | 1-19 | ◐ LIKELY ACTIVE |
| GBGrand Blanc Processing | Holly | MI | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| GLGrede LLC - Iron Mountain | Kingsford | MI | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| HDHercules Drawn Steel CORP | Livonia | MI | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| HCHowmet Corporation, Plant 4 | Whitehall | MI | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| HCHowmet Corporation, Plants 1 & 3 | Whitehall | MI | Primary Metal Manufacturing331528 | — | ◐ LIKELY ACTIVE |
| IRImco Recycling of Michigan, LLC | Coldwater | MI | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| LPLinn Products INC | Charlotte | MI | Primary Metal Manufacturing331318 | 100-499 | ◐ LIKELY ACTIVE |
| MEMadison Electric Company | Fraser | MI | Primary Metal Manufacturing331319 | — | ◐ LIKELY ACTIVE |
| MPMagnesium Prod of AM | Eaton Rapids | MI | Primary Metal Manufacturing331522 | 100-499 | ◐ LIKELY ACTIVE |
| MTMidwest Tube Fabricators INC | Sterling Heights | MI | Primary Metal Manufacturing331210 | 1-19 | ◐ LIKELY ACTIVE |
| NSNorth Star Steel CO | Monroe | MI | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| OMOerlikon Metco - Plymouth | Plymouth | MI | Primary Metal Manufacturing331492 | 20-99 | ◐ LIKELY ACTIVE |
| PJPhillips & Johnston INC Dba River Rock Fabrication | Grand Rapids | MI | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| TCTextron Cwc Division | Muskegon | MI | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| VSVast Sumitec INC | Benton Harbor | MI | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| WCWall Colmonoy - World Headquarters | Madison Heights | MI | Primary Metal Manufacturing331491 | 20-99 | ◐ LIKELY ACTIVE |
| WPWhitehall Products LTD | Montague | MI | Primary Metal Manufacturing331521 | 20-99 | ◐ LIKELY ACTIVE |
| WPWhite Pine Copper Refinery INC | White Pine | MI | Primary Metal Manufacturing331410 | 1-19 | ◐ LIKELY ACTIVE |
| ASAdvantage Sintered Metals INC | Battle Creek | MI | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| AIAutocast INC | Grandville | MI | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| BSBekaert Steel | Muskegon | MI | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| BHBohn Hydro Aluminum | Holland | MI | Primary Metal Manufacturing331316 | — | ◐ LIKELY ACTIVE |
Bunting Bearings CORP | Portage | MI | Primary Metal Manufacturing331529 | — | ◐ LIKELY ACTIVE |
| CDCascade Die Casting Mid-state | Grand Rapids | MI | Primary Metal Manufacturing331522 | — | ◐ LIKELY ACTIVE |
| CTCasting Technologies Company-michigan Casting Ctr | Fruitport | MI | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| CUContech U.s. LLC | Dowagiac | MI | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| CCCosma Casting Mich-battle Ck | Battle Creek | MI | Primary Metal Manufacturing331523 | — | ◐ LIKELY ACTIVE |
| EJEast Jordan Foundry LLC | Elmira | MI | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| FIFranklin Iron & Metal | Battle Creek | MI | Primary Metal Manufacturing331492 | 20-99 | ◐ LIKELY ACTIVE |
| FPFritz Products, INC | River Rouge | MI | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| GMGeneral Motors Powetrain | Saginaw | MI | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| GLGreat Lakes Die Cast | Muskegon | MI | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| HCHowmet Castings Plant 10 | Whitehall | MI | Primary Metal Manufacturing331529 | — | ◐ LIKELY ACTIVE |
| ICIntermet CORP | Stevensville | MI | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| KWKreher Wire Processing | Romulus | MI | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| LCLinamar Corporation | Alma | MI | Primary Metal Manufacturing331523 | — | ◐ LIKELY ACTIVE |
| MTMetal Technologies, Inc., Ravenna Ductile Iron | Ravenna | MI | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |