| SCSpring City Electrical Mfg. Co. | Spring City | 100–499 | ◐ LIKELY ACTIVE |
| SGStanley G Flagg & CO | Stowe | — | ◐ LIKELY ACTIVE |
| SFSuperior Forge and Steel | Pittsburgh | 20–99 | ◐ LIKELY ACTIVE |
| TATenaris Ambridge | Ambridge | 20–99 | ◐ LIKELY ACTIVE |
| TEThe Esab Group, INC. | Hanover | — | ◐ LIKELY ACTIVE |
| TPThe Perryman CO - Titanium Melting Facility - Phase 3 | Coal Center | — | ◐ LIKELY ACTIVE |
| TITitan Intl/pottstown | Pottstown | — | ◐ LIKELY ACTIVE |
| TTTsi Titanium INC. | Derry | 20–99 | ◐ LIKELY ACTIVE |
| TSTygart Steel | Mckeesport | 20–99 | ◐ LIKELY ACTIVE |
| VCVictaulic Co/lawrenceville Plt | Tioga | — | ◐ LIKELY ACTIVE |
| VLVictaulic Lawrenceville | Tioga | 100–499 | ◐ LIKELY ACTIVE |
| WCWah Chang Titanium Wire | Frackville | — | ◐ LIKELY ACTIVE |
| ZDZwaan Dry Clnr/canonsburg | Canonsburg | — | ◐ LIKELY ACTIVE |
| ACAkj Clairton LLC | Clairton | — | ◐ LIKELY ACTIVE |
| ATAmg Titanium Llc/551 Northgate Cir | New Castle | — | ◐ LIKELY ACTIVE |
| CMClearfield Metal Tech/clearfield Plt | Clearfield | — | ◐ LIKELY ACTIVE |
| CSCoatesville Scrap Iron & Metal Fac | Coatesville | — | ◐ LIKELY ACTIVE |
| DIDickson Investment Hardware INC | King of Prussia | — | ◐ LIKELY ACTIVE |
| EWEsab Welding & Cutting Prod/hanover | Hanover | — | ◐ LIKELY ACTIVE |
| GFGeorgia Financial Xiii Llc/avonmore Plt | Avonmore | — | ◐ LIKELY ACTIVE |
| KMKalas Manufacturing Plant 3 | Denver | — | ◐ LIKELY ACTIVE |
| KRKymera Reading Alloys Inc/robesonia | Robesonia | — | ◐ LIKELY ACTIVE |
Luxfer Magtech Inc/tamaqua | Tamaqua | — | ◐ LIKELY ACTIVE |
| MSMetaldyne Sintered Ridgway LLC | Emporium | — | ◐ LIKELY ACTIVE |
| MPMetalico Pgh INC | Pittsburgh | — | ◐ LIKELY ACTIVE |
| NSNatl Std Impoundment | Mount Joy | — | ◐ LIKELY ACTIVE |
| NLNavitus LLC | Bellefonte | — | ◐ LIKELY ACTIVE |
| PIPace Industries | Loyalhanna | — | ◐ LIKELY ACTIVE |
| PIPhb INC Die Casting Div/fairview | Fairview | — | ◐ LIKELY ACTIVE |
| PTPlymouth Tube | Horsham | — | ◐ LIKELY ACTIVE |
| PIProfiners Inc/hatfield Twp Plt | Hatfield | — | ◐ LIKELY ACTIVE |
| RBRhoads Building 57 | Philadelphia | — | ◐ LIKELY ACTIVE |
| SWSeverstal Wheeling/allenport | Allenport | — | ◐ LIKELY ACTIVE |
| TSTech Spec Inc/derry | Derry | — | ◐ LIKELY ACTIVE |
| WTWheatland Tube Council Ave Plt/wheatland Tube LLC | Wheatland | — | ◐ LIKELY ACTIVE |
| ADAerospace Display Sys Hatfield Fac | Hatfield | — | ◇ UNVERIFIED |
| ARAg-met Refining CORP | Delano | — | ◇ UNVERIFIED |
| APAir Products & Chemicals INC | Lancaster | — | ◇ UNVERIFIED |
| ANAkers Natl Roll Co/hyde Park Foundry | Hyde Park | — | ◇ UNVERIFIED |
| ASAk Steel Butler Works | Butler | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum CORP | Houston | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum Cor/washington Flatroll | Washington | — | ◇ UNVERIFIED |
| ALAllegheny Ludlum Llc/houston Fitch Works | Houston | — | ◇ UNVERIFIED |
| ATAllied Tube & Conduit CORP | Morrisville | — | ◇ UNVERIFIED |
| ATAllied Tube & Conduit Corp/norcom | Philadelphia | — | ◇ UNVERIFIED |
| ACAlumina Ceramic Components INC | Latrobe | — | ◇ UNVERIFIED |
| AMAmeri-precision Metals Inc/canonsburg Fac | Canonsburg | — | ◇ UNVERIFIED |
| ARAmg Resources CORP | Pittsburgh | — | ◇ UNVERIFIED |
| BMBardane Mfg Co/jermyn Plt | Jermyn | — | ◇ UNVERIFIED |
| BFBeaver Falls Machine Shop | Beaver Falls | — | ◇ UNVERIFIED |