| AMAmeri-precision Metals Inc/canonsburg Fac | Canonsburg, PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| AVAmer Video Glass Co/mt Pleasant Plt | Mount Pleasant, PA | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| ARAmg Resources CORP | Pittsburgh, PA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| AGAnchor Glass Connellsville Plt | Connellsville, PA | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| AHAndritz Herr-voss Stamco, INC. | Ambridge, PA | Machinery Manufacturing333519 | — | ◇ UNVERIFIED |
| AIAnker Industries | Turtle Creek, PA | Nonmetallic Mineral Product Manufacturing327410 | — | ◇ UNVERIFIED |
| AIApter Industries | Mckeesport, PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| AIArbco Industries INC | Export, PA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| AOArmoloy of Western Pennsylvania, INC. | Turtle Creek, PA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AWArmstrong World Ind /beaver Falls | Beaver Falls, PA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AWArmstrong World Industries | Beaver Falls, PA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AIAshland INC Freedom Term | Rochester, PA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| ASA. Stucki CO. Neville Road Facility | Neville, Township of, PA | Machinery Manufacturing333613 | — | ◇ UNVERIFIED |
| AFAti Flat Rolled Products, LLC | Natrona Heights, PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| AMAtomized Materials CO INC | Mc Donald, PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| AAAustin Assoc Inc/vermiculite Plt | Beaver Falls, PA | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| AAAxiom Automotive Technologies | Mc Kees Rocks, PA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| APAxion Power Battery Mfg CO | New Castle, PA | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◇ UNVERIFIED |
| BIBacharach INC | New Kensington, PA | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| BSBae Systems Land & Armaments/fayette Plt | Lemont Furnace, PA | Transportation Equipment Manufacturing336992 | — | ◇ UNVERIFIED |
| BLBake- Line Group LLC | Pittsburgh, PA | Food Manufacturing311821 | — | ◇ UNVERIFIED |
 Basic Carbide Corp/lowber Facility | Lowber, PA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| Basic Carbide Corporation | Buena Vista, PA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BWBattery Warehouse Plus | Butler, PA | Electrical Equipment, Appliance & Component Manufacturing335911 | — | ◇ UNVERIFIED |
| BUBayer USA INC | Pittsburgh, PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| BSBearing Service Company | Pittsburgh, PA | Fabricated Metal Product Manufacturing332991 | — | ◇ UNVERIFIED |
| BFBeaver Falls Machine Shop | Beaver Falls, PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| BFBeaver Falls Tubular Prodllc/beaver Falls Plt | Beaver Falls, PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| BVBeaver Valley Asphalt Corp/aliquippa Plt | Aliquippa, PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BABeck Arnley Worldparts CORP. | Pittsburgh, PA | Transportation Equipment Manufacturing336000 | — | ◇ UNVERIFIED |
| BBBell Boy Clnr/washington | Washington, PA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| BPBergen Power Pipe Su/donora Plt | Donora, PA | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| BPBethlen Printing | Ligonier, PA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| BTBet Tech Intl/crows Island Blacks Run | Aliquippa, PA | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| BEBloom Engineering CO Inc/baldwin | Pittsburgh, PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BIBpi INC - Schenley Pa Plant | Schenley, PA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| BOBp Oil #07160 | Mc Kees Rocks, PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| BFBrad Foote Gear Works Inc/neville Twp | Pittsburgh, PA | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
| BPBradley Paint CO | Connellsville, PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BBBrass & Bronze Casting CO | Irwin, PA | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| BCBrighton China CO Inc/beaver Falls | Beaver Falls, PA | Nonmetallic Mineral Product Manufacturing327112 | — | ◇ UNVERIFIED |
| BEBrighton Electric Steel Casting CO | Beaver Falls, PA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| BPBroudy Printing Inc/pgh | Pittsburgh, PA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| BFBryan Frank, INC. | Pittsburgh, PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CTCampbell Transportation Company, INC. | Dunlevy, PA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| CICarclo Ind | Latrobe, PA | Plastics and Rubber Products Manufacturing326112 | — | ◇ UNVERIFIED |
| CICargill, INC. - Salt Division | Mc Kees Rocks, PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| CTCarnegie Tar and Asphalt Co., Oakmont | Oakmont, PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CPCarpenter Powder Products INC | Bridgeville, PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| CICarson Ind/freeport | Freeport, PA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
