 Matthews International Corporation | Pittsburgh | PA | Primary Metal Manufacturing331523 | — | ● ACTIVE |
 Arconic Corporation | Pittsburgh | PA | Primary Metal Manufacturing331315 | — | ● ACTIVE |
 Ati Specialty Alloys & Components, LLC | Pittsburgh | PA | Primary Metal Manufacturing331491 | — | ● ACTIVE |
 Ati Specialty Materials LLC | Pittsburgh | PA | Primary Metal Manufacturing331492 | — | ● ACTIVE |
| USUnited States Steel Corporation | Pittsburgh | PA | Primary Metal Manufacturing331110 | — | ● ACTIVE |
| MTMcconway & Torley LLC - Steel Castings Mfg Plant | Pittsburgh | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
 Superior Forge & Steel Corporation (pittsburgh, Pa) | Pittsburgh | PA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| SFSuperior Forge and Steel | Pittsburgh | PA | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| MPMetalico Pgh INC | Pittsburgh | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| PFPittsburgh Flatroll CO | Pittsburgh | PA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| GSGrant Street | Pittsburgh | PA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| Matthews International Corporation - Pittsburgh Bronze | Pittsburgh | PA | Primary Metal Manufacturing331529 | 100-499 | ◐ LIKELY ACTIVE |
| PSPittsburgh Service Center | Pittsburgh | PA | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| TMTmp Metals Group, LTD. | Pittsburgh | PA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| WCWhemco-steel Castings, INC | Pittsburgh | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| AFAllegheny Foundry | Pittsburgh | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ASAllegheny Steel Products CO. | Pittsburgh | PA | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| AZAmerican Zinc Recycling LLC | Pittsburgh | PA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| PFPittsburgh Flatroll Company | Pittsburgh | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| SSSwedish Steel | Pittsburgh | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| VGVernon Gold & Silver Company | Pittsburgh | PA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| WHWest Homestead Engineering & Machine | Pittsburgh | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
