| SCSelect Cleaners/monongahela | Monongahela | PA | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| SMSilberline Mfg Co/lansford Plt | Lansford | PA | Chemical Manufacturing325131 | — | ◇ UNVERIFIED |
| SCSomerset Consolidate/somerset | Somerset | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| SCSpring City Elec/spring City | Spring City | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| SPSt Products, LLC | Altoona | PA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| SOStructures of USA | Johnstown | PA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| SISummit Iron Works | Indiana | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SPSwagelok Processing Corporation/koppel Facility | Koppel | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TITms Intl Llc/eighty Four Fac | Eighty Four | PA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| TCTonolli CORP. | Nesquehoning | PA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| TSTorpedo Specialty Wire | Pittsfield | PA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| TWTorpedo Wire & Strip/pittsfield | Pittsfield | PA | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| UEUnion Elec Steel Carnegie Plant | Carnegie | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| ULUS Lock & Hdwr Co/columbia | Columbia | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| USUS Steel Mon Valley Works Fairless Plt | Fairless Hills | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WFWatsontown Foundry | Watsontown | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WTWheatland Tube Co/clark St Plt | Sharon | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WFWilliamsport Foundry Co/williamsport | Williamsport | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WSWilson Scrap Metals INC - Route 286 | Saltsburg | PA | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| WAWorthington Armstron/wave - Malvern | Malvern | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| YMYork Mold INC. | Manchester | PA | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| ZIZurn Ind Llc/cast Metals Div | Erie | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AMAATP - Mid Atlantic | Lancaster | PA | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| AAlburtis (2) | Alburtis | PA | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| ATAlcoa Technical Center | New Kensington | PA | Primary Metal Manufacturing331313 | 100-499 | ◐ LIKELY ACTIVE |
| AUArconic US LLC | 1480 Manheim Pike | PA | Primary Metal Manufacturing331315 | 500+ | ◐ LIKELY ACTIVE |
ATI Specialty Materials - Oakdale | Oakdale | PA | Primary Metal Manufacturing331492 | 20-99 | ◐ LIKELY ACTIVE |
| BWBekaert Wilkes-Barre | Hanover Twp | PA | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| BWBen Weitsman of Scranton | Scranton | PA | Primary Metal Manufacturing331491 | 1-19 | ◐ LIKELY ACTIVE |
| BSBeth Steel Corporation | Bethlehem | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| BOBrackenridge Operations | Brackenridge | PA | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| BBridon-Bekaert | Hanover Township | PA | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| BEBridon-Bekaert Exeter | Exeter | PA | Primary Metal Manufacturing331110 | 100-499 | ◐ LIKELY ACTIVE |
| CICambridge-Lee Industries LLC Reading Facility | Reading | PA | Primary Metal Manufacturing331420 | 100-499 | ◐ LIKELY ACTIVE |
| CPClairton Plant | Clairton | PA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| CBCleveland-Cliffs Butler Works | Lyndora | PA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| CCCleveland-Cliffs Corporate Coatesville - Corporate | Coatesville | PA | Primary Metal Manufacturing331110 | 1-19 | ◐ LIKELY ACTIVE |
| CSCronimet Specialty Metals Wheatland | Wheatland | PA | Primary Metal Manufacturing331492 | 20-99 | ◐ LIKELY ACTIVE |
| DWDirect Wire D1 | Denver, PA | PA | Primary Metal Manufacturing331420 | 100-499 | ◐ LIKELY ACTIVE |
| ETEdgar Thomson Plant | Braddock | PA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| ECElectralloy/G.O. Carlson Inc/GOC Property Holdings/Rouseville | Oil City | PA | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| ENEllwood National Crankshaft Services | Hermitage | PA | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| ENEllwood National Steel | Irvine | PA | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| FPFairless Plant | Fairless Hills | PA | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| FCFayette Custom Wire Products, LLC | Scottdale | PA | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| FGForgepoint Government Solutions, LLC | Coatesville | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| FIFranklin Industries Co. | Franklin | PA | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| GSGrant Street | Pittsburgh | PA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| GCGrede Casting Integrity | Meadville | PA | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| HPHamburg Plow Works Inc. | Hamburg | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |