| BWBlaine Window Hardware | Hagerstown | MD | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| CCCianbro Corporation Baltimore Facility | Curtis Bay | MD | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| EAEastalco Aluminum CO | Frederick | MD | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| EAElf Atochem North America, INC | Baltimore | MD | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| HEHalethorpe Extrusions Incorporated | Baltimore | MD | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| MRMaryland Recycling | Baltimore | MD | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| MCMpa - Cox Creek | Baltimore | MD | Primary Metal Manufacturing331000 | — | ◇ UNVERIFIED |
| SSSchultz & Sons Salvage INC | Denton | MD | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TTechalloy | Baltimore | MD | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| UIUnited Iron & Metal | Baltimore | MD | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| VHVulcan Hart Corporation | Dundalk | MD | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| WSWorthington Steel Company the | Baltimore | MD | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| WIWally`s Iron Works | Mount Airy | MD | Primary Metal Manufacturing331210 | 20-99 | ◇ UNVERIFIED |
| AAAmerican Alloy Foundry INC | Baltimore | MD | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| AMAnsam Metals CORP | Baltimore | MD | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| BBBlack Briar Investments, LLC | North East | MD | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
 Boldmark Steel Industry, LLC | Baltimore | MD | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| CICambridge Iron & Metal | Baltimore | MD | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| DADesign Assistance Construction Systems INC | Sparrows Point | MD | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| JIJ&d Industrial Services INC | Pasadena | MD | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| NANew Arts Bronze Studios INC | Baltimore | MD | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
