| HAHp Acquisition Corp/e Hempfield | Lancaster | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| IKIpsco Koppel Tubular CORP Ambridge | Ambridge | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| JMJohnson Matthey Inc/west Whiteland | West Chester | PA | Primary Metal Manufacturing331491 | 100-499 | ◐ LIKELY ACTIVE |
| JWJohnstown Wire Tech/johnstown Wire Plt | Johnstown | PA | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| JAJudson a Smith Co/boyertown | Boyertown | PA | Primary Metal Manufacturing331400 | — | ◐ LIKELY ACTIVE |
| JWJ Walter Miller Co/lancaster | Lancaster | PA | Primary Metal Manufacturing331525 | — | ◐ LIKELY ACTIVE |
| KMKalas Manufacturing INC Lancaster Plant | Lancaster | PA | Primary Metal Manufacturing331420 | 100-499 | ◐ LIKELY ACTIVE |
| KIKennametal INC Bedford Facility | Bedford | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| KFKeystone Foundry Div | Erie | PA | Primary Metal Manufacturing331529 | — | ◐ LIKELY ACTIVE |
| LSLatrobe Spec Steel Sandycreek Svc Ctr | Franklin | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| LSLehigh Specialty Melting INC | Latrobe | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| LFLincoln Foundry Inc/erie | Erie | PA | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| MBMaterion Brush INC | Shoemakersville | PA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| MMMm Metals USA LLC | Fairless Hills | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| PSPenn State Special Metals LLC | Koppel | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| PUPenn Union Corp/edinboro | Edinboro | PA | Primary Metal Manufacturing331529 | — | ◐ LIKELY ACTIVE |
| PPPiad Precision Casting/hempfield Twp Plt | Greensburg | PA | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| PMPrime Metals Acquisition LLC - Lucerne Mines | Lucernemines | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| PIPrl Ind Inc/cornwall | Cornwall | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| PIPrl Ind Inc/lebanon | Lebanon | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| RSReynolds Services INC | Greenville | PA | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| RHR H Sheppard CO INC | Hanover | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| RMRitchey Metals CO Inc/hendersonville Plt | Canonsburg | PA | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| SASa Alloys | Columbia | PA | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| STSalem Tube Mfg | Greenville | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| SASignature Alum INC - Greenville Facility | Greenville | PA | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| TTTapco Tube Co/meadville | Meadville | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| TCTech Cast LLC | Myerstown | PA | Primary Metal Manufacturing331512 | — | ◐ LIKELY ACTIVE |
| TMTitanium Metals CORP Dba Timet | Morgantown | PA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| TMTube Methods, INC. | Bridgeport | PA | Primary Metal Manufacturing331210 | 100-499 | ▲ REPORTED CLOSED |
| UCUnicast Co/boyertown | Boyertown | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| UFUrick Foundry Co/erie | Erie | PA | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| UCUss Corp/edgar Thomson Works | Braddock | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| UMUss Mon Valley Works - Irvin Plant | West Mifflin | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| USUS Steel Fairless Hills Works | Fairless Hills | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| VCVorteq Coil Finishers Llc/allentown | Allentown | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| WCWeatherly Casting & Mach CO Llc/weatherly Plt | Weatherly | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| WTWolf Tech Llc/douglassville | Douglassville | PA | Primary Metal Manufacturing331512 | — | ◐ LIKELY ACTIVE |
| ADAiro Die Casting INC | Loyalhanna | PA | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| ALAllegheny Ludlum CORP | Vandergrift | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| AAAlum Alloys Foundry | Sinking Spring | PA | Primary Metal Manufacturing331524 | — | ◐ LIKELY ACTIVE |
| AUArconic US LLC | Lancaster | PA | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| BTBerk Tek Llc/new Holland | New Holland | PA | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| BMBerry Metal CO | Zelienople | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| BABraeburn Alloy Steel Rolling Mill Fac | Lower Burrell | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| FFFlury Foundry CO - Lancaster Facility | Lancaster | PA | Primary Metal Manufacturing331529 | — | ◐ LIKELY ACTIVE |
Global Advanced Metals Usa/boyertown | Boyertown | PA | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| HIHofmann Ind Inc/sinking Spring | Sinking Spring | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| KMKalas Manufacturing INC Plant 1 | Denver | PA | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| KMKalas Manufacturing Plant 2 | Denver | PA | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |