| RMRam Machine Tooling INC | Picayune | — | ◇ UNVERIFIED |
| RIReman INC | Polkville | — | ◇ UNVERIFIED |
| RRRemy Reman, LLC | Taylorsville | — | ◇ UNVERIFIED |
| RIRoura Iron Works INC | Holly Springs | — | ◇ UNVERIFIED |
| RMRoura Material Handling INC | Holly Springs | — | ◇ UNVERIFIED |
| SSSpeciality Stairs and Miscellaneous Fabrication INC | Pearl | — | ◇ UNVERIFIED |
| SSStructural Steel Services Inc, Plant 3 | Meridian | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Inc., Plant 6 | Meridian | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Plant 1 | Meridian | — | ◇ UNVERIFIED |
| SSSudden Services Inc, Distribution and Operations Center | Philadelphia | — | ◇ UNVERIFIED |
| SSSuper Sagless, Div of Leggett & Platt | Tupelo | — | ◇ UNVERIFIED |
| SMSyltone Marine INC | Gulfport | — | ◇ UNVERIFIED |
| TCTeikuro Corporation | Meridian | — | ◇ UNVERIFIED |
| TWThompsons Welding and Machine Works | Philadelphia | — | ◇ UNVERIFIED |
| TRTier Rack Corporation, Como Plant | Como | — | ◇ UNVERIFIED |
| UOUtility Optimization Group LLC | Pascagoula | — | ◇ UNVERIFIED |
| WMWastequip Manufacturing Company, Dba May Fab | Brookhaven | — | ◇ UNVERIFIED |
| WMWastequip Manufacturing Company LLC | Brookhaven | — | ◇ UNVERIFIED |
| WMWilliams Machine Works INC | Moss Point | — | ◇ UNVERIFIED |
| WMWilliams Machine Works Inc, Facility Number 2 | Pascagoula | — | ◇ UNVERIFIED |
| WMWorld Marine of Mississippi, Llc, West | Pascagoula | — | ◇ UNVERIFIED |
| ZMZachry Moss Point Fabrication Facility | Moss Point | — | ◇ UNVERIFIED |
| AMAmory, MS | Amory | 20–99 | ◐ LIKELY ACTIVE |
| AMArchitectural Mailboxes Inc. | Taylorsville | 100–499 | ◐ LIKELY ACTIVE |
| BCBlueScope Coated Products | Byam | 100–499 | ◐ LIKELY ACTIVE |
| BCBlueScope Coated Products Jackson | Byram | 100–499 | ◐ LIKELY ACTIVE |
| CFContract Fabricators, Inc. - Iuka, MS | Iuka | 20–99 | ◐ LIKELY ACTIVE |
| EMEastern Metal Framing Mississippi | Hattiesburg | 20–99 | ◐ LIKELY ACTIVE |
| FSFabricators Supply LLC | West Point | 100–499 | ◐ LIKELY ACTIVE |
| FCFluid Connectors Batesville | Batesville | 100–499 | ◐ LIKELY ACTIVE |
| FCFluid Connectors Madison | Madison | 20–99 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Tupelo - GTM08;GTM10 | Shannon | 20–99 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Tupelo - GTM11 | Shannon | 20–99 | ◐ LIKELY ACTIVE |
| GMGoldin Metals, Inc. | Gulfport | 20–99 | ◐ LIKELY ACTIVE |
Historical Arts & Casting, Inc. Mississippi | Lumberton | 1–19 | ◐ LIKELY ACTIVE |
| HCHol-Mac Corporation Plant 1 | Bay Springs | 100–499 | ◐ LIKELY ACTIVE |
| LPLii Piping Fabricators LLC | Lucedale | — | ◐ LIKELY ACTIVE |
| LLouisville | Louisville | 1–19 | ◐ LIKELY ACTIVE |
| MMMagnum Metals, LLC | Nettleton | 20–99 | ◐ LIKELY ACTIVE |
| MIMcGregor Industrial Steel Fabrication, Inc. | Oxford | 1–19 | ◐ LIKELY ACTIVE |
| MGMEC - Greenville | Greenville | 20–99 | ◐ LIKELY ACTIVE |
| MSMetal Solutions - Vicksburg | Vicksburg | 20–99 | ◐ LIKELY ACTIVE |
| MSMueller Supply Company INC | Brookhaven | 20–99 | ◐ LIKELY ACTIVE |
| NMNammo MAC, LLC | Bay Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Southcentral LLC - Jackson Mississippi | Flowood | 20–99 | ◐ LIKELY ACTIVE |
| NSNVision Solutions, INC. | Diamondhead | 20–99 | ◐ LIKELY ACTIVE |
| QSQuality Steel Corporation of MS | Cleveland | 100–499 | ◐ LIKELY ACTIVE |
Steel Service Corporation | Jackson | 100–499 | ◐ LIKELY ACTIVE |
| TWThompson's Welding Services, INC. | Hamilton | 20–99 | ◐ LIKELY ACTIVE |
Threaded Fasteners, Inc. (Gulfport 005) | Gulfport | 1–19 | ◐ LIKELY ACTIVE |