| HRHavin Red E Mix LLC Sullivan Plant | Sullivan | MO | — | ◇ UNVERIFIED |
| HRHawk-i Ready Mix | Coralville | IA | — | ◇ UNVERIFIED |
| HRHayward Ready-mix Concrete LLC Div of Todd''s Redi | Hayward | WI | — | ◇ UNVERIFIED |
| HLHc&d LLC - Sand Island Ready-mix Facility | Honolulu | HI | — | ◇ UNVERIFIED |
| HSHeartland Sweeteners LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| HMHeidelberg Materials Southeast Agg LLC - Bessemer Plant | Bessemer | AL | — | ◇ UNVERIFIED |
| HMHeidelberg Materials US Cement LLC | Cleveland | OH | — | ◇ UNVERIFIED |
| HPHelco Portable Concrete Plant (donnelly) 302231 | Donnelly | ID | — | ◇ UNVERIFIED |
| HSHelena Sand & Gravel Dba Montana Materials & Const | Anaconda | MT | — | ◇ UNVERIFIED |
| HHempnova | Eugene | OR | — | ◇ UNVERIFIED |
| HPHenkay Precast INC | Fort Denaud | FL | — | ◇ UNVERIFIED |
| HCHenkel Corporation | Port Huron | MI | — | ◇ UNVERIFIED |
| HUHenkel US Operations CORP | Madison Heights | MI | — | ◇ UNVERIFIED |
| HFHenry Frerk Sons INC | Chicago | IL | — | ◇ UNVERIFIED |
| HNHenry Nelch & Son CO INC | Springfield | IL | — | ◇ UNVERIFIED |
| HCHeritage Concrete Service Corporation - Dunn Plant | Dunn | NC | — | ◇ UNVERIFIED |
| HSHeritage Stone | Zanesville | OH | — | ◇ UNVERIFIED |
| HCHerzog Contracting Corporation-herzog Red E Mixed Concrete CO | Saint Joseph | MO | — | ◇ UNVERIFIED |
| HHexion | Cleburne | TX | — | ◇ UNVERIFIED |
| HIHexion INC. - Batesville | Batesville | AR | — | ◇ UNVERIFIED |
| HCH&h Concrete on Demand | Irving | TX | — | ◇ UNVERIFIED |
| HAHighline Aftermarket | Dallas | TX | — | ◇ UNVERIFIED |
| H2Highway 2 Ready Mix | Palmyra | NE | — | ◇ UNVERIFIED |
| HFHigley Facility | Mesa | AZ | — | ◇ UNVERIFIED |
| HRHildreth Ready Mix #2 | Rockingham | NC | — | ◇ UNVERIFIED |
| HRHillsboro Ready Mix Div of Mid-illinois Concrete | Hillsboro | IL | — | ◇ UNVERIFIED |
| HLHines #1 Lease | Ada | LA | — | ◇ UNVERIFIED |
| HRHissong Ready-mix & Aggregates LLC - Eliot | Eliot | ME | — | ◇ UNVERIFIED |
| HRHite Ready Mix | Bardstown | KY | — | ◇ UNVERIFIED |
| HPHi-way Paving Carolina Bay Parkway Batch 4409 | Nashville | TN | — | ◇ UNVERIFIED |
| HMHj Mohr & Sons CO | Oak Park | IL | — | ◇ UNVERIFIED |
| HCHma Concrete LLC Dba Heritage Concrete Cheswold Facility | Cheswold | DE | — | ◇ UNVERIFIED |
| HCHma Concrete LLC Dba Heritage Concrete Middletown Faci;ity | Townsend | DE | — | ◇ UNVERIFIED |
| HCHma Concrete LLC Dba Heritage Concrtete Avondale Facility | Avondale | PA | — | ◇ UNVERIFIED |
| HSHm Southeast Concrete (griffin Plant) | Griffin | GA | — | ◇ UNVERIFIED |
| HPHockley Plant | Hockley | TX | — | ◇ UNVERIFIED |
| HRHockley Rmc Plant | Hockley | TX | — | ◇ UNVERIFIED |
| HSHog Slat, INC. - Clinton Plant 2 | Clinton | NC | — | ◇ UNVERIFIED |
| HMHolcim - Mar INC - Dumfries | Dumfries | VA | — | ◇ UNVERIFIED |
| HMHolcim - Mar INC - Stephens City Rmx | Stephens City | VA | — | ◇ UNVERIFIED |
| HPHolcim - Plaquemines Lng Plant | Port Sulphur | LA | — | ◇ UNVERIFIED |
| HIHolcim-sor, Inc.-choctaw | Baton Rouge | LA | — | ◇ UNVERIFIED |
| HIHolcim-sor, Inc.-golden Pass Portable | Sabine Pass | TX | — | ◇ UNVERIFIED |
| HIHolcim-sor, Inc.-gonazales | Gonzales | LA | — | ◇ UNVERIFIED |
| HIHolcim-sor INC - Gonzales Plant | Gonzales | LA | — | ◇ UNVERIFIED |
| HIHolcim-sor, INC. - Pecue | Baton Rouge | LA | — | ◇ UNVERIFIED |
| HUHolcim US INC | Fremont | NE | — | ◇ UNVERIFIED |
| HWHolcim Wcr - Cs-portable | Colorado Springs | CO | — | ◇ UNVERIFIED |
| HIHolcim-wcr INC - Denver Plant | Denver | CO | — | ◇ UNVERIFIED |
| HWHolcim Wcr - Pueblo East | Pueblo Area | CO | — | ◇ UNVERIFIED |
| HWHolcim Wcr - Pueblo East | Pueblo | CO | — | ◇ UNVERIFIED |
| HRHolliday Rock - Adelanto | Adelanto | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Canoga Park 31 | Canoga Park | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Chino 18 | Chino | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Co., INC. | Bakersfield | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Colton Plant 4 | Bloomington | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Company, INC | Littlerock | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Company - Mountain View | Upland | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Company - Van Nuys | Van Nuys | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock - Irvine | Irvine | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock San Bernardino 29 | San Bernardino | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock - San Bernardino Facility | San Bernardino | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Santa Ana 25 | Santa Ana | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Ventura 27 | Ventura | CA | — | ◇ UNVERIFIED |
| HRHolliday Rock Westminster 20 | Westminster | CA | — | ◇ UNVERIFIED |
| HCHollingsworth Concrete Products INC. | Carrollton | GA | — | ◇ UNVERIFIED |
| HCHolroyd CO Lakewood | Lakewood | WA | — | ◇ UNVERIFIED |
| HRHolyoke Ready Mix | Holyoke | CO | — | ◇ UNVERIFIED |
| HLHome Lumber Reddimix | Hazard | KY | — | ◇ UNVERIFIED |
| HIHoneywell International Inc-claymont | Claymont | DE | — | ◇ UNVERIFIED |
| HRHood River Sand and Gravel | Hood River | OR | — | ◇ UNVERIFIED |
| HRHood River Sand, Gravel & Ready Mix - the Dalles | The Dalles | OR | — | ◇ UNVERIFIED |
| HRHorgan Recycling Inc/west Point | West Point | PA | — | ◇ UNVERIFIED |
| HHowell | Freehold | NJ | — | ◇ UNVERIFIED |
| HMHowell Mouldings | New Century | KS | — | ◇ UNVERIFIED |
| HOHubbell Okc Family | Oklahoma City | OK | — | ◇ UNVERIFIED |
| HPHuey P. Stockstill Llc, Asphalt Plant No. 4 | Wiggins | MS | — | ◇ UNVERIFIED |
| HPHuey P Stockstill Llc, Picayune | Picayune | MS | — | ◇ UNVERIFIED |
| HPHuey P. Stockstill Llc, Ready Mix Concrete #2 | Poplarville | MS | — | ◇ UNVERIFIED |
| HPHuey P Stockstill LLC - Tycer Plant #1 | Hammond | LA | — | ◇ UNVERIFIED |
| HCHuntsman Corporation - the Woodlands Corporate Site | The Woodlands | TX | — | ◇ UNVERIFIED |
| HPHuntsman Pigments Americas, LLC (dba Southern Color) | Cartersville | GA | — | ◇ UNVERIFIED |
| HPHurst Plant | Hurst | TX | — | ◇ UNVERIFIED |
| HCHydro Conduit | Roanoke | TX | — | ◇ UNVERIFIED |
| HDHydro Dynamics | Shillington | PA | — | ◇ UNVERIFIED |
| IPI-220 Plant | Jackson | MS | — | ◇ UNVERIFIED |
| IFIcon Foods | Portland | OR | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company | Boise | ID | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company Site | Caldwell | ID | — | ◇ UNVERIFIED |
| IMIdaho Materials and Construction | Eagle | ID | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC | Elvaston | IL | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO Inc-canton | Canton | MO | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO Inc-kahoka | Kahoka | MO | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC - Keokuk | Keokuk | IA | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC - Knoxville | Knoxville | IA | — | ◇ UNVERIFIED |
| IIIdeker INC. (portable) (air) | Wathena | KS | — | ◇ UNVERIFIED |
| IMIgp Methanol LLC - Gulf Coast Methanol Complex | Myrtle Grove | LA | — | ◇ UNVERIFIED |
| ICIke Concrete | Fairplay | CO | — | ◇ UNVERIFIED |
| IBIllinois Biofuel Group LLC | Princeton | IL | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Elwin | IL | — | ◇ UNVERIFIED |