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