| KIKymera Intl Llc/croydon | Croydon | PA | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| MUMarcegaglia USA Munhall Plant | Munhall | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| MTMcconway & Torley LLC - Steel Castings Mfg Plant | Pittsburgh | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| NMNf & M Intl Monaca Plt | Monaca | PA | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |
| SMSandvik Materials Technology | Clarks Summit | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| TCTube City Ims/slag Processing | Braddock | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| WWardflex | Tioga | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| WMWard Mfg Plt 1 & 2 | Blossburg | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| BRBlue Ridge Pressure Castings | Lehighton | PA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| CSCronimet Specialty Metals USA INC. | Wheatland | PA | Primary Metal Manufacturing331529 | — | ◇ UNVERIFIED |
| DPDura-bond Pipe 1 LLC | Mckeesport | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| DIDynamet Incorporated | Washington | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| EMEagle Metals-office Bldg | Leesport | PA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| EEEureka Elec Prod/north East | North East | PA | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| GSGautier Steel Holdings Inc/gautier Steel Johnstown | Johnstown | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| IIIwm International, LLC - Wire Facility | York | PA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| MIMcc Intl INC | Cecil | PA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| PKPrecision Kidd Steel CO | Aliquippa | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| RSRh Sheppard Foundry Bendix Hanover | Hanover | PA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| STSharon Tube Co/church St Plt | Wheatland | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
Skyline Steel | Camp Hill | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
Superior Forge & Steel Corporation (pittsburgh, Pa) | Pittsburgh | PA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| TTThe Techs - Nextech Plant | Turtle Creek | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| VCVictaulic Company/alburtis Facility | Alburtis | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
Webco Industries, INC. - Reno Division | Reno | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WEWestinghouse Elec CO - Specialty Metals Plant | Blairsville | PA | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| WSWhemco Steel Castings Inc/west Homestead | Homestead | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
Herr & Sacco, INC. | Manheim | PA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
Omega Flex, INC. | Exton | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| AAccumetrics | Royersford | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| ABActive Brass Foundry | Telford | PA | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| ASAk Steel Corp/butler Works | Butler | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| APAlleima Precision Tube LLC | Scottdale | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| AVAlumicore Ventures Llc/monessen | Monessen | PA | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| AFAti Flat Rolled Products, LLC | Natrona Heights | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| BCBekaert Corp/hanover Twp | Wilkes Barre | PA | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| BRBlue Ridge Pressure Casting, INC. | Lehighton | PA | Primary Metal Manufacturing331521 | 100-499 | ◐ LIKELY ACTIVE |
| BFBoyertown Foundry Company | New Berlinville | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| BRBronze Resources | Aliquippa | PA | Primary Metal Manufacturing331522 | — | ◐ LIKELY ACTIVE |
| CCChemalloy Company Llc/ Conshohocken | Bryn Mawr | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| CMCk Manufacturing, LLC | Lancaster | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| CSCleveland-Cliffs Steelton LLC | Steelton | PA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| CMConcast Metal Prod Co/adams Twp | Mars | PA | Primary Metal Manufacturing331525 | — | ◐ LIKELY ACTIVE |
| CMConemaugh Mem Med Ctr/johnstown | Johnstown | PA | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| CIConnex, INC. | Fairview | PA | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| DADavis Alloys Mfg Llc/sharpsville | Sharpsville | PA | Primary Metal Manufacturing331512 | — | ◐ LIKELY ACTIVE |
| DIDonsco Inc Mount Joy Foundry | Mount Joy | PA | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| EPEast Penn Mfg CO Inc/smelter Plt | Lyons | PA | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| EEEsmark Excalibur LLC - Conneaut Lake | Conneaut Lake | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| FFFairmount Foundry Inc. | Hamburg | PA | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |