| HMHalliburton Magnet Cove Grinding Plant | Malvern | AR | — | ◇ UNVERIFIED |
| HMHalliburton Monahans Baroid | Monahans | TX | — | ◇ UNVERIFIED |
| HNHalliburton North Slope (prudhoe) Field Camp | Prudhoe Bay | AK | — | ◇ UNVERIFIED |
| HPHalliburton Pocasset Baroid | Pocasset | OK | — | ◇ UNVERIFIED |
| HSHalliburton Service Center - Venice | Venice | LA | — | ◇ UNVERIFIED |
| HSHalliburton Sterling Facility | Sterling | AK | — | ◇ UNVERIFIED |
| HWHalliburton Woodville Facility | Woodville | TX | — | ◇ UNVERIFIED |
| HIHalosource INC | Bothell | WA | — | ◇ UNVERIFIED |
| HGHammond Group INC. Halstab Div | Hammond | IN | — | ◇ UNVERIFIED |
| HCHanover College | Madison | IN | — | ◇ UNVERIFIED |
| HCHarcros Chemical Incorporated | Nashville | TN | — | ◇ UNVERIFIED |
| HCHarcros Chemicals INC | Shreveport | LA | — | ◇ UNVERIFIED |
| HCHarcros Chemicals, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| HCHardcore Composites | New Castle | DE | — | ◇ UNVERIFIED |
| HJHarland John H CO | Richmond | VA | — | ◇ UNVERIFIED |
| HIHarwood Industries INC | Tyler | TX | — | ◇ UNVERIFIED |
| HPHatteras Pools | Cameron | SC | — | ◇ UNVERIFIED |
| HPHaviland Products Company | Grand Rapids | MI | — | ◇ UNVERIFIED |
| HIHbf Investments, LLC | Humboldt (historical) | IA | — | ◇ UNVERIFIED |
| HAHeartland Automotive LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| HSHeartland Sweeteners LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| HEHelwig Enterprises INC. | Shandon | OH | — | ◇ UNVERIFIED |
| HHempnova | Eugene | OR | — | ◇ UNVERIFIED |
| HCHenkel Corporation | Port Huron | MI | — | ◇ UNVERIFIED |
| HUHenkel US Operations CORP | Madison Heights | MI | — | ◇ UNVERIFIED |
| HPHenry Plastic Molding | Fremont | CA | — | ◇ UNVERIFIED |
| HCHess CO Industries of Arizona INC | Eloy | AZ | — | ◇ UNVERIFIED |
| HSHess Services - Hays (e 9th) | Hays | KS | — | ◇ UNVERIFIED |
| HHexion | Cleburne | TX | — | ◇ UNVERIFIED |
| HIHexion INC. - Batesville | Batesville | AR | — | ◇ UNVERIFIED |
| HCHi Cone Division of Itw | Zebulon | NC | — | ◇ UNVERIFIED |
| HAHighline Aftermarket | Dallas | TX | — | ◇ UNVERIFIED |
| HTHilco Technologies | Armada | MI | — | ◇ UNVERIFIED |
| HCHoerbiger Corporation of America, INC | Coral Springs | FL | — | ◇ UNVERIFIED |
| HPHoffer Plastics | South Elgin | IL | — | ◇ UNVERIFIED |
| HSHolly Springs Plastics LLC | Holly Springs | MS | — | ◇ UNVERIFIED |
| HHomalite | New Castle | DE | — | ◇ UNVERIFIED |
| HVHomeland Vinyl Products | Pinson | AL | — | ◇ UNVERIFIED |
| HVHomeland Vinyl Products, INC. | Ogden | UT | — | ◇ UNVERIFIED |
| HIHoneywell International Inc-claymont | Claymont | DE | — | ◇ UNVERIFIED |
| HSHoneywell Safety Products | Smithfield | RI | — | ◇ UNVERIFIED |
| HSHoneywell Safety Products | Johnston | RI | — | ◇ UNVERIFIED |
| HHospira | Buffalo | NY | — | ◇ UNVERIFIED |
| HMHowell Mouldings | New Century | KS | — | ◇ UNVERIFIED |
| HPH P Pelzer | Port Huron | MI | — | ◇ UNVERIFIED |
| HCHuntsman Corporation - the Woodlands Corporate Site | The Woodlands | TX | — | ◇ UNVERIFIED |
| HFHusqvarna Forestry Products Na, INC. | Nashville | AR | — | ◇ UNVERIFIED |
| HPHusqvarna Plastics Nashville, LLC | Nashville | AR | — | ◇ UNVERIFIED |
| HBHyatt Ball CO LTD | Fort Edward | NY | — | ◇ UNVERIFIED |
| HDHydro Dynamics | Shillington | PA | — | ◇ UNVERIFIED |