| HSHanna Steel CORP. | Fairfield | AL | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| USUnited States Steel Corporationfairfield Pipe Mil | Fairfield | AL | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
 Power Grid Professionals INC. | Fairfield | AL | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◐ LIKELY ACTIVE |
| FEFritz Enterprises | Fairfield | AL | Nonmetallic Mineral Product Manufacturing327000 | — | ◐ LIKELY ACTIVE |
| DIDresser Industries INC Harbison-walker Refractories | Fairfield | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| FPFirerock Products, LLC | Fairfield | AL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| HWHarbison Walker (fairfield) | Fairfield | AL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| SSteelscape | Fairfield | AL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SFSteelscape Fairfield | Fairfield | AL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| WBW.j. Bullock INC. | Fairfield | AL | Primary Metal Manufacturing331423 | — | ◇ UNVERIFIED |
| AJAuntie Jenni's Moonshine | Fairfield | AL | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| CCCp Construction, LLC | Fairfield | AL | Nonmetallic Mineral Product Manufacturing327390 | — | ◐ LIKELY ACTIVE |
| FDFairfield Dualine | Fairfield | AL | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| CPCustom-bilt Products INC | Fairfield | AL | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| MIMallin Industries, LLC | Fairfield | AL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MMMerchants Metals INC | Fairfield | AL | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| PIPraxair INC | Fairfield | AL | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| USUnited States Steel Corporation - Fairfield Tubular | Fairfield | AL | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| VMVeitch Machine Company, INC. | Fairfield | AL | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
