| HBHalliburton Bossier City Field Camp | Bossier City | LA | — | ◇ UNVERIFIED |
| HCHalliburton Casper Field Camp | Evansville | WY | — | ◇ UNVERIFIED |
| HCHalliburton Casper Field Camp | Evansville | WY | — | ◇ UNVERIFIED |
| HDHalliburton Duncan Field Camp | Duncan | OK | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services | Odessa | TX | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services Bulk Cement Plant | Victoria | TX | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services INC - Beeville | Beeville | TX | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services, INC. - Halwest Facili | Williston | ND | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services, INC. - Norman Doucet | Golden Meadow | LA | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services - Williston | Williston | ND | — | ◇ UNVERIFIED |
| HEHalliburton Energy Svcs | Westlake | LA | — | ◇ UNVERIFIED |
| HFHalliburton Fort Lupton Field Camp | Fort Lupton | CO | — | ◇ UNVERIFIED |
| 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 Sterling Facility | Sterling | AK | — | ◇ UNVERIFIED |
| HWHalliburton Woodville Facility | Woodville | TX | — | ◇ UNVERIFIED |
| HCHarcros Chemicals INC - Memphis Facility | Memphis | TN | — | ◇ UNVERIFIED |
| HEHaviland Enterprises INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| HPHaviland Products Company - Kalamazoo | Kalamazoo | MI | — | ◇ UNVERIFIED |
| HIHawkins Industrial Group - Red Rock | Saint Paul | MN | — | ◇ UNVERIFIED |
| HIHawkins Industrial Group - Rosemount | Rosemount | MN | — | ◇ UNVERIFIED |
| HCHeatbath CORP | Indian Orchard | MA | — | ◇ UNVERIFIED |
| HCHenkel CORP | Calhoun | GA | — | ◇ UNVERIFIED |
| HIHercules INC an Aqualon Div | Kenedy | TX | — | ◇ UNVERIFIED |
| HBHero Bx Clinton | Clinton | IA | — | ◇ UNVERIFIED |
| HIHexion INC. - Fayetteville Facility | Fayetteville | NC | — | ◇ UNVERIFIED |
| HIHexion INC - Luling Facility | Luling | LA | — | ◇ UNVERIFIED |
| HIHexion INC. - Missoula | Missoula | MT | — | ◇ UNVERIFIED |
| HAHighline Aftermarket | Dallas | TX | — | ◇ UNVERIFIED |
| HCH-o-h Chemicals INC | Palatine | IL | — | ◇ UNVERIFIED |
| HIHoneywell International (burdick & Jackson) | Muskegon | MI | — | ◇ UNVERIFIED |
| HCHoughton Chemical Distribution and Manufacturing | Boston | MA | — | ◇ UNVERIFIED |
| HTHowmet Ti-cast | Whitehall | MI | — | ◇ UNVERIFIED |
| HCHp Computing and Printing, INC. | Corvallis | OR | — | ◇ UNVERIFIED |
| HCHydrite Chemical CO | Waterloo | IA | — | ◇ UNVERIFIED |
| IAIbc Advanced Technologies, INC. | American Fork | UT | — | ◇ UNVERIFIED |
| IRIgm Resins Charlotte, INC | Charlotte | NC | — | ◇ UNVERIFIED |
| INImpact Nano 153 Quabbin Boulevard | Orange | MA | — | ◇ UNVERIFIED |
| IOIndependence Oilfield Chemicals | Midland | TX | — | ◇ UNVERIFIED |
| IOIndependence Oilfield Chemicals LLC | Pleasanton | TX | — | ◇ UNVERIFIED |
| ICIndustrial Chemicals CORP | Arvada | CO | — | ◇ UNVERIFIED |
| IOIneos Oxide - a Division of Ineos Americas LLC | Plaquemine | LA | — | ◇ UNVERIFIED |
| IUIneos Usa, LLC - Laporte Pao Facility | La Porte | TX | — | ◇ UNVERIFIED |
| IUInfineum USA L.p. - Bayway Chemical Plant | Linden | NJ | — | ◇ UNVERIFIED |
| IVIngevity Virginia Corporation | Covington | VA | — | ◇ UNVERIFIED |
| IIngredion | Mapleton | IL | — | ◇ UNVERIFIED |
| ICInnovative Chemical Technologies INC. | Cartersville | GA | — | ◇ UNVERIFIED |
| ICInnovative Chemical Technologies, INC. | Cartersville | GA | — | ◇ UNVERIFIED |