| MBMetal Bank of America | Philadelphia | PA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| MEMetalor Electrotechnics USA Corp/plt 5 | Delmont | PA | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| MRMiltec Resources Uss Edgar Thomson Works | Braddock | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| MZMitsui Zinc Powder | Monaca | PA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| NCNew Castle Foundry/new Castle | New Castle | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| NMNgk Metals CORP | Reading | PA | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| NANorth American Steel & Wire INC | Butler | PA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| OGOz Gedney Llc/shoemakersville Plt | Shoemakersville | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| PCPenncast Corp/marietta | Marietta | PA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| PSPennsylvania Steel Fndy & Machine CO | Hamburg | PA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| PSPhoenix Svc LLC - Johnstown Slag Prep Facility | Johnstown | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| PFPittsburgh Flatroll CO | Pittsburgh | PA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| PCPrecision Cut Ind - 60 Ram Drive | Hanover | PA | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| PTPrecision Tube CO LLC | Lansdale | PA | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| PTPrecision Tube CO / North Wales | North Wales | PA | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| PBPrice Battery Lead Smelter | Hamburg | PA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| QAQuaker Alloy Inc/myerstown | Myerstown | PA | Primary Metal Manufacturing331311 | — | ◇ UNVERIFIED |
| QIQuality Investment Castings INC | Blandon | PA | Primary Metal Manufacturing331512 | — | ◇ UNVERIFIED |
| RMReactive Metals & Alloys | West Pittsburg | PA | Primary Metal Manufacturing331112 | — | ◇ UNVERIFIED |
| RAReal Alloy Recycling Inc/lebanon | Lebanon | PA | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| RSRecticon/allied Steel CORP. | Parker Ford | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| RARegen Alum Llc/yoe | Yoe | PA | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| RPRidgway Powdered Metals | Ridgway | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| RARose Acquisition Co., LLC | Reading | PA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| SCSci Cast Intl Mfg | Bechtelsville | PA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| SCSelect Cleaners/monongahela | Monongahela | PA | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| SCShasta Capt Haz Waste Operation | Aliquippa | PA | Primary Metal Manufacturing331210 | — | ◇ 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 |
| SISymmco Inc/sykesville | Sykesville | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TBThalheimer Brothers LLC | Philadelphia | PA | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| TTTin Technology & Refining | West Chester | PA | Primary Metal Manufacturing331492 | — | ◇ 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 |
| TSTriangle Suspension Sys | Punxsutawney | PA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| UEUnion Elec Steel Carnegie Plt | Carnegie | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| ULUS Lock & Hdwr Co/columbia | Columbia | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| USUS Steel - Ambridge | Ambridge | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| USUS Steel Mon Valley Works Fairless Plt | Fairless Hills | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| VCVictaulic CO Amer/allentown Facility | Allentown | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WFWatsontown Foundry | Watsontown | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WSWest Salisbury Found/west Salisbury Plt | West Salisbury | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| WTWheatland Tube Co/clark St Plt | Sharon | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
