| OEOnsite Environmental | Redmond | WA | — | ◇ UNVERIFIED |
 Optek Technology, INC. | Carrollton | TX | — | ◇ UNVERIFIED |
| OIOptical Imaging Systems | Northville | MI | — | ◇ UNVERIFIED |
| OIOptim Incorporated | North Brookfield | MA | — | ◇ UNVERIFIED |
| OROquawka River Terminal | Gladstone | IL | — | ◇ UNVERIFIED |
| OMOrder Matic Electronics Corporation | Del City | OK | — | ◇ UNVERIFIED |
| OHOregon Health Licensing Office | Salem | OR | — | ◇ UNVERIFIED |
| OSOsf St James Hospital | Pontiac | IL | — | ◇ UNVERIFIED |
| OCOshkosh CORP - Oakwood Facility | Oshkosh | WI | — | ◇ UNVERIFIED |
| OEOster Enterprises INC | Lemont | IL | — | ◇ UNVERIFIED |
| OEOuachita Electric | West Monroe | LA | — | ◇ UNVERIFIED |
| OMOwen Manufacturing INC | Owen | WI | — | ◇ UNVERIFIED |
| OOOx Owner, LLC. | Uncasville | CT | — | ◇ UNVERIFIED |
| OCOxy-dry CORP | Arlington Heights | IL | — | ◇ UNVERIFIED |
| OBOzinga Bros INC | Chicago | IL | — | ◇ UNVERIFIED |
| PBPacific Biosciences of California INC | Menlo Park | CA | — | ◇ UNVERIFIED |
| PNPacific Northwest Print and Fulfillment | Spokane | WA | — | ◇ UNVERIFIED |
| PDPa Dpw/western State Sch & Hosp | Canonsburg | PA | — | ◇ UNVERIFIED |
| PEPa Elec Coil Ltd/mfg Mtr Coils & Rep Mtr | Pittsburgh | PA | — | ◇ UNVERIFIED |
| PEPa Elec Coil Ltd/mfg Mtr Coils & Rep Mtr | Glassport | PA | — | ◇ UNVERIFIED |
| PBPalm Beach Outboards | Riviera Beach | FL | — | ◇ UNVERIFIED |
| PPPalmer Products | Louisville | KY | — | ◇ UNVERIFIED |
| PAPalmetto Adhesive CO. (formerly: Swk Enterprises) | Bridgeton | NJ | — | ◇ UNVERIFIED |
| PPanatrol | Bedford Park | IL | — | ◇ UNVERIFIED |
| PDParadise Datacom Inc/boalsburg Plt | Boalsburg | PA | — | ◇ UNVERIFIED |
| PEParagon Electronic Systems INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| PAParc Auto Industries INC | Hauppauge | NY | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP Chomerics Division | Woburn | MA | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP Fluid Systems Division | Smithtown | NY | — | ◇ UNVERIFIED |
| PHParker Hannifin Corporation, Racor Division | Holly Springs | MS | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP Porter Instrument Div | Hatfield | PA | — | ◇ UNVERIFIED |
| PCParkson Corporation | Trussville | AL | — | ◇ UNVERIFIED |
| PMParkview Metal Products INC | Lake Zurich | IL | — | ◇ UNVERIFIED |
| PCParkway Center/wilkes Barre | Wilkes Barre Township | PA | — | ◇ UNVERIFIED |
| PCParlex Corp., San Jose Division | San Jose | CA | — | ◇ UNVERIFIED |
| PFParlex Flexible Printed Circuits & Flat Flex Cables | Methuen | MA | — | ◇ UNVERIFIED |
| PCPartlow CORP | New Hartford | NY | — | ◇ UNVERIFIED |
| PCParts Cleaning Technologies LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| PLParty Lite Mfg | Batavia | IL | — | ◇ UNVERIFIED |
| PAPascor Atlantic Corporation | Bland | VA | — | ◇ UNVERIFIED |
| PUPas USA INC | Washington | NC | — | ◇ UNVERIFIED |
| PVPatina V, a Div of Norlaine, INC | Hacienda Heights | CA | — | ◇ UNVERIFIED |
| PMPaule Metal Recycling | Alorton | IL | — | ◇ UNVERIFIED |
| PMPaul Michels, Jr. | Saint Joseph | IL | — | ◇ UNVERIFIED |
| PSPaul Shields | Rantoul | IL | — | ◇ UNVERIFIED |
| PHPb & H Moulding | Syracuse | NY | — | ◇ UNVERIFIED |
| PEPbr Electronics, INC. | Athens | AL | — | ◇ UNVERIFIED |
| PSPcb Specialties | Irving | TX | — | ◇ UNVERIFIED |
| PMPcc/ Mold Masters | Eastlake | OH | — | ◇ UNVERIFIED |
| PPPci Pharmaceutical Services | Rockford | IL | — | ◇ UNVERIFIED |
| PPctel-bloomingdale | Bloomingdale | IL | — | ◇ UNVERIFIED |
| PEPct Engineered Systems LLC | Davenport | IA | — | ◇ UNVERIFIED |
| PMPdq Manufacturing, INC. | De Pere | WI | — | ◇ UNVERIFIED |
| PCPeabody Coal CO | Marissa | IL | — | ◇ UNVERIFIED |
| PVPeace Village | Palos Park | IL | — | ◇ UNVERIFIED |
| PCPeachtree City Photocircuits Warehouse | Peachtree City | GA | — | ◇ UNVERIFIED |
| PEPeavey Electronics Corporation, Plant Number 3 | Meridian | MS | — | ◇ UNVERIFIED |
| PEPeavey Electronics Corp, Plant Number 7 | Decatur | MS | — | ◇ UNVERIFIED |
| PEPeavey Electronics Plant 23 | Leakesville | MS | — | ◇ UNVERIFIED |
| PEPeavy Electronics CORP Plant 20 | Foley | AL | — | ◇ UNVERIFIED |
| PCPeco Corporation | Auburn Hills | MI | — | ◇ UNVERIFIED |
| PCPemco Corporation | Bluefield | VA | — | ◇ UNVERIFIED |
| PCPennatronics CORP. | Coal Center | PA | — | ◇ UNVERIFIED |
| PPPenn Panel & Box CO | Collingdale | PA | — | ◇ UNVERIFIED |
| PSPenny Swain | Urbana | IL | — | ◇ UNVERIFIED |
| PJPeoria Journal Star INC | Peoria | IL | — | ◇ UNVERIFIED |
| PMPerfect Mulch Products INC | Mccook | IL | — | ◇ UNVERIFIED |
| PPPerformance Products INC | Rockford | IL | — | ◇ UNVERIFIED |
| PEPerkin Elmer Chrom Division | Norwalk | CT | — | ◇ UNVERIFIED |
| PCPerkin-elmer CORP Applied Sci | Pomona | CA | — | ◇ UNVERIFIED |
| PEPerkin Elmer, INC. | Oak Ridge | TN | — | ◇ UNVERIFIED |
| PPPerky-pet Products CO | Denver | CO | — | ◇ UNVERIFIED |
| PSPermacel St Louis Inc-permacel St Louis INC | Saint Louis | MO | — | ◇ UNVERIFIED |
| PIPermacor INC | Oak Lawn | IL | — | ◇ UNVERIFIED |
| PIPermatex INC | Kansas City | KS | — | ◇ UNVERIFIED |
| PEPermian Express Partners LLC | Steeleville | IL | — | ◇ UNVERIFIED |
| PAPettit Auto and Truck Sales | Rockford | IL | — | ◇ UNVERIFIED |
| PIPhenomenex INC | Torrance | CA | — | ◇ UNVERIFIED |
| PCPhilips Components Discrete P | Los Angeles | CA | — | ◇ UNVERIFIED |
| PDPhilips Display Components CO | Seneca Falls | NY | — | ◇ UNVERIFIED |
| PEPhilips Electronics N America | Columbia | SC | — | ◇ UNVERIFIED |
| PMPhilips Medical Systems | Andover | MA | — | ◇ UNVERIFIED |
| PSPhilips Semiconductor Mfg INC | Hopewell Junction | NY | — | ◇ UNVERIFIED |
| PSPhilips Semiconductors | Sunnyvale | CA | — | ◇ UNVERIFIED |
| PSPhilips Semiconductors | Sunnyvale | CA | — | ◇ UNVERIFIED |
 Phillips Medisize St. Croix Meadows | Hudson | WI | — | ◇ UNVERIFIED |
| PGPhilos Global Technologies INC | Buffalo Grove | IL | — | ◇ UNVERIFIED |
| PCPhoenix CO of Chicago INC. | Wood Dale | IL | — | ◇ UNVERIFIED |
| PWPhoenix West Stable Products | Irwindale | CA | — | ◇ UNVERIFIED |
| PCPhotocircuits CORP | Glen Cove | NY | — | ◇ UNVERIFIED |
| PFPhoto Fabricators INC | Van Nuys | CA | — | ◇ UNVERIFIED |
| PTPiconics-well Treatment Unit | Tyngsborough | MA | — | ◇ UNVERIFIED |
| PWPicture Woods LTD | Boulder | CO | — | ◇ UNVERIFIED |
| PKPiezo Kinetics/bellefonte Plt | Bellefonte | PA | — | ◇ UNVERIFIED |
| PCPinecrest Condominium #521 | Broadview Heights | OH | — | ◇ UNVERIFIED |
| PFPinnacle Frames & Accents | Piggott | AR | — | ◇ UNVERIFIED |
| PFPinnacle Frames & Accents-pocahontas | Pocahontas | AR | — | ◇ UNVERIFIED |
| PHPioneer Hi Bred International Incorporated | Johnston | IA | — | ◇ UNVERIFIED |
| PIPioneer Industrial Component Sys | Springboro | OH | — | ◇ UNVERIFIED |
| PPPioneer Powder | Franklin Park | IL | — | ◇ UNVERIFIED |
