| BTBrimmer Turan Foundry and Machine Shop | Gulfport | MS | Primary Metal Manufacturing331524 | 1-19 | ◇ UNVERIFIED |
| SMSullivan Metals INC | Holly Springs | MS | Primary Metal Manufacturing331524 | 1-19 | ◇ UNVERIFIED |
| AIAnduril Industries INC | Mchenry | MS | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| BEBaldor Electric Company | Columbus | MS | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| BIBekaert INC | Clarksdale | MS | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| GWGallman Wire Technologies | Gallman | MS | Primary Metal Manufacturing331319 | — | ◇ UNVERIFIED |
| HIHowse Implement Company, Inc, Howse Implement Company Waste Tire Processing Faci | Laurel | MS | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| LMLaurel Machine & Foundry Hawkes Plant | Laurel | MS | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| MCMetalloy Corp, The, Mississippi Division | Shannon | MS | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| MCMueller Casting CO INC | Fulton | MS | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| PHParker Hannifin Corporation, Booneville Plant | Booneville | MS | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
 Penco Products INC | Vicksburg | MS | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| SSS&h Steel Corporation | Pearl | MS | Primary Metal Manufacturing331110 | 1-19 | ◇ UNVERIFIED |
| SSSxp Schulz Xtruded Products LLC | Hernando | MS | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| BEBerry Enterprise of Ms, INC | Perkinston | MS | Primary Metal Manufacturing331210 | 1-19 | ◇ UNVERIFIED |
| LLLamar, LLC | Lumberton | MS | Primary Metal Manufacturing331221 | 1-19 | ◇ UNVERIFIED |
| SISouthern Industrial Technologies, LLC | Stringer | MS | Primary Metal Manufacturing331111 | 1-19 | ◇ UNVERIFIED |
| ATAdvance Tool & Die, INC. | Pearl | MS | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| CMCommercial Metals | — | MS | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| CMCroft Metals INC | Newton | MS | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| FMFerrousouth/ferrous Metal Transfer | Iuka | MS | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| GIGraham Industrial Services | Laurel | MS | Primary Metal Manufacturing331112 | — | ◇ UNVERIFIED |
| KSKarnavati Steel Inds. Mississippi | Biloxi | MS | Primary Metal Manufacturing331423 | — | ◇ UNVERIFIED |
| LILong Industrial Tools | Greenville | MS | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| MFMaeco Fabrication, INC. | Biloxi | MS | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| MPMississippi Precision Casting Parts, LLC | Columbus | MS | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| MCMuller Cooper Tube Company, INC. | Fulton | MS | Primary Metal Manufacturing331421 | — | ◇ UNVERIFIED |
| NMNortheast Metal Processors, INC. | Plantersville | MS | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| PFParhen Foundry, INC. | Amory | MS | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| SXSchulz Xtruded Products | Robinsonville | MS | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SCScrew Conveyor Corporation | Winona | MS | Primary Metal Manufacturing331112 | — | ◇ UNVERIFIED |
| WCWorthington Cylinders | New Albany | MS | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
