| JCJp Castings INC Dba Specialty Castings | Springport | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| KPKBE Precision Products, LLC | New Baltimore | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| LDLakeshore Die Cast | Baroda | MI | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| MSMain Stainless Steel INC | Sterling Heights | MI | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| MMMarcellus Metalcasters INC | Marcellus | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| MMat-tek | Flushing | MI | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| MCMetalloy CORP Foundry Div | Hudson | MI | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| MTMetal Technologies Dba Ravenna Ductile Iron Plant | Ravenna | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| MTMetal Tech Products, INC | Detroit | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| MLMetavation LLC Vassar Plt | Vassar | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| MDMichigan Die Casting LLC. | Dowagiac | MI | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| MSMichigan Steel Industries INC Dba Michigan Steel Strapping | Taylor | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| MMMidwest Metallurgical Laboratory INC | Marshall | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| MFMike's Foundry INC. | Ravenna | MI | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| MSMill Steel CO | Melvindale | MI | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| MPMinerals Processing CORP | Stephenson | MI | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| MMM & M Die Cast | Bridgman | MI | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| MSMounsey Steel Products | Erie | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| NSNorth Shore Manufacturing | Coloma | MI | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| OOjibway | Ecorse | MI | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| OSOlympic Steel INC | Detroit | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| OROttawa River Steel | Detroit | MI | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| PMPadnos Manufacturing INC | Grand Rapids | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| PIPal-tec INC | Wallace | MI | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| PGPanther Global Technologies | Wixom | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| PHPicard Holding USA | Battle Creek | MI | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| PAPortage Aluminum Foundry | Galesburg | MI | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| PDPrecision Die Cast, Inc. | Kimball | MI | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| PTPrecision Tooling Technologies, LLC | Zeeland | MI | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
 Profile Extrusion CO INC | Coldwater | MI | Primary Metal Manufacturing331000 | — | ◇ UNVERIFIED |
| QMQDC Manufacturing | Brighton | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| QNQuality Non-ferrous Foundry | Wyoming | MI | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| RCRail Components, Inc. | Muskegon | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RTRJ Torching, Inc. | Flint | MI | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| RSRothbury Steel INC | Rothbury | MI | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| RTR&R Tool, Inc. | Holland | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RERyan Engineering Design | Pellston | MI | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| SHSamuel-whittar Holdings INC | Troy | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| SFSchwarb Foundry | Warren | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| SISchwarb Industries INC | Troy | MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| SNSeverstal North America INC | Dearborn | MI | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| SFSherwood Friction Materials | Detroit | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| SSShoreline Steel Supply INC | New Haven | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| SSigncomp | Grand Rapids | MI | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| SCSmith Castings INC | Kingsford | MI | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| SCSmith Castings LLC | Kingsford | MI | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| SFSuperb Fabricating LLC | South Lyon | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| SFSuperb Fabricating LLC | New Hudson | MI | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| TSTce Systems INC | Charlotte | MI | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| TMT-four Manufacturing & Engineering, INC. | Ionia | MI | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
