| BFBeaver Falls Tubular Prodllc/beaver Falls Plt | Beaver Falls | — | ◇ UNVERIFIED |
| BSBigbee Steel & Tank CO | Manheim | — | ◇ UNVERIFIED |
| BFBoyertown Foundry Co/fka Eafco | New Berlinville | — | ◇ UNVERIFIED |
| BBBrass & Bronze Casting CO | Irwin | — | ◇ UNVERIFIED |
| BABridon American CORP | Exeter | — | ◇ UNVERIFIED |
| BEBrighton Electric Steel Casting CO | Beaver Falls | — | ◇ UNVERIFIED |
| BEBrubacher Excavating INC | Bowmansville | — | ◇ UNVERIFIED |
| BSBudd Site | Philadelphia | — | ◇ UNVERIFIED |
| CPCarpenter Powder Products INC | Bridgeville | — | ◇ UNVERIFIED |
| CICarson Ind/freeport | Freeport | — | ◇ UNVERIFIED |
| CWCavert Wire | Lemont Furnace | — | ◇ UNVERIFIED |
| CPCharter Plastics | Titusville | — | ◇ UNVERIFIED |
| COCheckers One Hour Cleaners/washington | Washington | — | ◇ UNVERIFIED |
| CMChevron Molycorp Washington Remediation Proj | Washington | — | ◇ UNVERIFIED |
| CSClarion Sintered Metals | Ridgway | — | ◇ UNVERIFIED |
| CMClearfield Mach Co/3rd & Everett Streets | Clearfield | — | ◇ UNVERIFIED |
| CFCol Fin Specialty Steel Mfg | New Brighton | — | ◇ UNVERIFIED |
| CSCommercial Steel Corporation | Glassport | — | ◇ UNVERIFIED |
| CCContech Const Prod - Greencastle | Greencastle | — | ◇ UNVERIFIED |
| CICooper Ind/corry Plt | Corry | — | ◇ UNVERIFIED |
| DBDamascus Bishop Tube/greenville | Greenville | — | ◇ UNVERIFIED |
| DDDemorah Drive Associates | Montgomeryville | — | ◇ UNVERIFIED |
| DMDent Mfg CO Inc/northampton | Northampton | — | ◇ UNVERIFIED |
| DCDomestic Casting CO LLC | Shippensburg | — | ◇ UNVERIFIED |
| DIDonsco INC Building 8 | Belleville | — | ◇ UNVERIFIED |
| DIDynamet INC N Main St Fac | Washington | — | ◇ UNVERIFIED |
| EIEafco INC | Boyertown | — | ◇ UNVERIFIED |
| EBEagle Brass Company | Leesport | — | ◇ UNVERIFIED |
| EEEdward E Goldberg & Sons | Philadelphia | — | ◇ UNVERIFIED |
| EFEffort Foundry Inc/bath | Bath | — | ◇ UNVERIFIED |
| EREllwood Remelt Steel Proposed Var/esr Facility | New Castle, City of | — | ◇ UNVERIFIED |
 Embassy Powdered Metals/emporium | Emporium | — | ◇ UNVERIFIED |
| EMEphrata Mfg Co/ephrata | Ephrata | — | ◇ UNVERIFIED |
| ESEsab Site at Sandvik Smt | Clarks Summit | — | ◇ UNVERIFIED |
| ETExide Technologies - Reading Smelter Div | Reading | — | ◇ UNVERIFIED |
| ETExide Technologies Site | Laureldale | — | ◇ UNVERIFIED |
| FHFairless Hills Steam Generating Sta | Fairless Hills | — | ◇ UNVERIFIED |
| FUFci USA LLC | Mount Union | — | ◇ UNVERIFIED |
| FSFranklin Smelting & Refining CORP | Philadelphia | — | ◇ UNVERIFIED |
| FAFreedom Alloys INC | Royersford | — | ◇ UNVERIFIED |
| GWGamesa Wind/fairless Hills Wind Turbine Nacelle Mfg | Fairless Hills | — | ◇ UNVERIFIED |
| GIGarfield Industries | Philadelphia | — | ◇ UNVERIFIED |
| GFGettysburg Foundry Spec Mfg | Gettysburg | — | ◇ UNVERIFIED |
| GSGkn Sinter Metals - Emporium Boro Plant 2 | Emporium | — | ◇ UNVERIFIED |
| GIGottlieb INC | Neville Island | — | ◇ UNVERIFIED |
| HPHalpern Processing INC. | Philadelphia | — | ◇ UNVERIFIED |
| HLHanover Lantern Inc/kindig Ln | Hanover | — | ◇ UNVERIFIED |
| HCHazleton Casting CO | Hazleton | — | ◇ UNVERIFIED |
| HCHazleton Casting CO Llc/hazleton | Hazleton | — | ◇ UNVERIFIED |
| HPHi-tech Plating | Erie | — | ◇ UNVERIFIED |
