| BEBoyesen Engineering | Lenhartsville | PA | Transportation Equipment Manufacturing336991 | — | ◇ UNVERIFIED |
| BFBrad Foote Gear Works Inc/neville Twp | Pittsburgh | PA | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
| BFBradford Forest INC | Tioga | PA | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| BPBradley Paint CO | Connellsville | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BBBrass & Bronze Casting CO | Irwin | PA | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| BPBrenneman Printing INC | Lancaster | PA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| BABridon American CORP | Exeter | PA | Primary Metal Manufacturing331222 | — | ◇ 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 |
| BMBri Mar Mfg Llc/s Main St Plt | Chambersburg | PA | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| BCBrodart CO | Lock Haven | PA | Paper Manufacturing322291 | — | ◇ UNVERIFIED |
| BCBrodart Co/mcelhattan Plt | Mcelhattan | PA | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| BEBrubacher Excavating INC | Bowmansville | PA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| BBBrumbaugh Body CO INC | Duncansville | PA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| BFBryan Frank, INC. | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BSB S Quarries INC | Montrose | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BSBudd Site | Philadelphia | PA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| BMBuilding Materials Manufacturing CORP | Erie | PA | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| BCBulk Chemical INC | Mohrsville | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| BCBulk Chemicals INC | Hamburg | PA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| BCBulk Chemicals, INC. | Shoemakersville | PA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| BCBulk Chemicals, INC. | Blandon | PA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| BDBulk Dried Materials Llc/hartley St Plt | York | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BDBulk Dried Materials Llc/workrite Masonry Plt | Thomasville | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BTBulova Tech Llc/lancaster | Lancaster | PA | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| BDBurkhart & Dresner Dry Clnrs/ephrata | Ephrata | PA | Computer and Electronic Product Manufacturing334415 | — | ◇ UNVERIFIED |
| BLBurnham LLC Dba Burnham Commercial/dillerville Rd | Lancaster City | PA | Machinery Manufacturing333414 | — | ◇ UNVERIFIED |
| CICabinet Ind/railroad St Plt | Danville | PA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| CGCabinetworks Group Inc/mt Union Plt | Mount Union | PA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| CICadmus Investments | Easton | PA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| CCCambria Cogen CO | Ebensburg | PA | Textile Product Mills314994 | — | ◇ UNVERIFIED |
| CTCampbell Transportation Company, INC. | Dunlevy | PA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| CICantol INC | Philadelphia | PA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| CCCapen Careful Clnrs | Harrisburg | PA | Chemical Manufacturing325310 | — | ◇ UNVERIFIED |
| CGCap Glass Allentown Llc/northampton Plt | Northampton | PA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| CMCaraustar Mill Group Inc/sinking Spring | Reading | PA | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| CICarclo Ind | Latrobe | PA | Plastics and Rubber Products Manufacturing326112 | — | ◇ UNVERIFIED |
| CSCardinal Sys Inc/york | York | PA | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| CACardone American St Complex | Philadelphia | PA | Transportation Equipment Manufacturing336399 | — | ◇ UNVERIFIED |
| CICardone Industries | Philadelphia | PA | Transportation Equipment Manufacturing336399 | — | ◇ UNVERIFIED |
| CFCargill Feed and Nutrition Martinsburg | Martinsburg | PA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| CICargill, INC. - Salt Division | Mckees Rocks | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| CCCarlas Clnrs/carlisle | Carlisle | PA | Food Manufacturing311300 | — | ◇ UNVERIFIED |
| CCCarlisle Construction Materials | Carlisle | PA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| CTCarlisle Tire & Wheel Mfg | Carlisle | PA | Plastics and Rubber Products Manufacturing326211 | — | ◇ UNVERIFIED |
 Carmeuse Lime INC. Hanover Op Erations | Hanover | PA | Food Manufacturing311942 | — | ◇ UNVERIFIED |
| CICarson Ind/freeport | Freeport | PA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| CCCartex CORP | Fairless Hills | PA | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| CCCarville Clnr/king of Prussia | King of Prussia | PA | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| CTCascades Tissue Group Pa Inc/pittston | Pittston | PA | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
