| LTL to Z Ent INC | Banning | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
 M2 Performance Solutions LLC | Concord | NC | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| MAMagnesium Alloy Prod. CO | Compton | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| MBMajor Brass Foundry INC | Gardena | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| MMMartin Marietta Corporation | No Locality Name to Migrate From 2002 Nei V3 | NY | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| MIMathews International Corporation | Winter Haven | FL | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
 Matthews International Corporation | San Jacinto | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| MBMetal Briquetting Company | Los Angeles | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| MBMontclair Bronze INC | Montclair | CA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| NBNational Bronze & Metals (ohio) INC | Lorain | OH | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
 Pcc Structurals INC Lsbs Iii | Portland | OR | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| Pcc Structurals, INC. - West Haven | Ogden | UT | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| PRPlano Rod Mill | Plano | TX | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| RSRenco Systems INC | Banning | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| RTRennsteig Tools INC | Camarillo | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| RIRexnord Industries LLC | Brownsville | TX | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| RMR&h Machine INC | Caldwell | ID | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| RSRobert St. Croix Sculpture Studio & Foundry, INC. | West Palm Beach | FL | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| SCSandwich Casting and Machine | Sandwich | IL | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| SFSanta Fe Foundry | Santa Fe | NM | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| SPSchaffran Propeller Usa, LLC | Miami | FL | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| SCSeybert Castings, INC. | Huntingdon Valley | PA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| SESharon Escoto | Hesperia | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| SBSpindler Brothers | Kenilworth | NJ | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| SFSpintek Foundry and Machine, LLC | Mound House | NV | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| SMSuperior Metal Fabricators, INC. | Las Vegas | NV | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| UDUniversal Die Casting CO | Los Angeles | CA | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| UDUS Dol Osha - Tampa | Tampa | FL | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| UMUS Metal Powders, INC. | Flemington | NJ | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| VPValley Pattern & Mfg INC. | Stockton | CA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| WCWlh Co., LLC | Marshall | MI | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
