| MPMississippi Precision Cast Parts LLC | Columbus | MS | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| ATAk Tube LLC | Columbus | IN | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| BEBaldor Electric Company | Columbus | MS | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| CACentral Aluminum Company | Columbus | OH | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| CSColumbus Steel Castings | Columbus | OH | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| CWCostco Wholesale - Columbus | Columbus | OH | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| EBExide Battery Plant | Columbus | GA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| FFFunk Finecast INC | Columbus | OH | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| GAG-cor Automotive CORP | Columbus | OH | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| GCGeneral Casting CO Poulton Div | Columbus | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| GCGolden Casting CORP | Columbus | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| HMHarry Masser CO INC | Columbus | OH | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| IHI H Schlezinger INC | Columbus | OH | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| KCKroot CORP | Columbus | IN | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| MGMark Gray Enterprises | Columbus | OH | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| SPSmc Precious Metals Smelter & Base Metal Refy | Columbus | MT | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| UAUnico Alloys INC | Columbus | OH | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| CSCe Systems | Columbus | IN | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| CDChrome Deposit Corp., Columbus Roll Shop | Columbus | MS | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| CPColumbus Processing Facility | Columbus | MT | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| MPMississippi Precision Casting Parts, LLC | Columbus | MS | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| SSSteven Steel Supply | Columbus | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SMStillwater Mining Company | Columbus | MT | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| SMStillwater Mining CO Smelter | Columbus | MT | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| TEThormax Enterprises, LLC | Columbus | IN | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TEThormax Enterprises, LLC | Columbus | IN | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
