| GCGeorgia Carolina Concrete (augusta Ready Mix Plant) | Augusta | GA | — | ◐ LIKELY ACTIVE |
| GQGJT Quikrete | Grand Junction | CO | 1–19 | ◐ LIKELY ACTIVE |
| GRGlasscock Ready Mix Concrete LLC - Central Mix Broad Street | Sumter | SC | — | ◐ LIKELY ACTIVE |
| GFGlendale Facility | Glendale | AZ | — | ◐ LIKELY ACTIVE |
| GJGrand Junction Concrete Pipe / Ready Mix | Grand Junction | CO | — | ◐ LIKELY ACTIVE |
| GCGrant CO Concrete CO INC | Dry Ridge | KY | — | ◐ LIKELY ACTIVE |
| GAGreen Acres Land Development | Powells Point | NC | — | ◐ LIKELY ACTIVE |
| GSG & S Concrete Batch Plant | Katy | TX | — | ◐ LIKELY ACTIVE |
| GCGulf Coast Ready Mix LLC | Homosassa | FL | — | ◐ LIKELY ACTIVE |
| GTGvea Tank Farm (petro Star Inc.) | North Pole | AK | — | ◐ LIKELY ACTIVE |
| HRHard Rock Concrete of Virginia LLC | Haymarket | VA | — | ◐ LIKELY ACTIVE |
| HRHard Rock Materials INC | Green Cove Springs | FL | 20–99 | ◐ LIKELY ACTIVE |
| HRHarrison Redi-mix Corporation | Fairfax | VT | 20–99 | ◐ LIKELY ACTIVE |
| HCHarrod Concrete & Stone CO INC | Lexington | KY | — | ◐ LIKELY ACTIVE |
| HTHarrod Transport Company Harrod Concrete and Stone Company | Frankfort | KY | — | ◐ LIKELY ACTIVE |
| HRHartleys Ready Mix Concrete | Winston Salem | NC | — | ◐ LIKELY ACTIVE |
| HRHatfield Ready Mix, INC. | Batesville | AR | — | ◐ LIKELY ACTIVE |
| HRHawkeye Ready Mix Hiawatha | Hiawatha | IA | 20–99 | ◐ LIKELY ACTIVE |
| HHHeavy Highway Infrastructure-sanford Plant | Sanford | FL | — | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials Ne Braddock Plt | Braddock | PA | — | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials Ne Pittsburgh Plt | Pittsburgh | PA | — | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials Southeast Agg LLC - Leeds Plant | Leeds | AL | — | ◐ LIKELY ACTIVE |
| HSHelena Sand & Gravel, INC | Helena | MT | 100–499 | ◐ LIKELY ACTIVE |
| HRHengel Ready Mix and Construction, Inc | Pillager | MN | 20–99 | ◐ LIKELY ACTIVE |
| HEHeritage Environmental Svcs LLC | Kansas City | MO | — | ◐ LIKELY ACTIVE |
| HLHermann Lumber Company Ready Mix | Hermann | MO | — | ◐ LIKELY ACTIVE |
| HRHernando Redi Mix | Nesbit | MS | — | ◐ LIKELY ACTIVE |
| HRHess Ready Mix Concrete | Schuylkill Haven | PA | — | ◐ LIKELY ACTIVE |
| HSHF Sinclair Woods Cross Refining LLC (2) | West Bountiful | UT | 100–499 | ◐ LIKELY ACTIVE |
| HCHgr Cement, LLC | Mesquite | TX | — | ◐ LIKELY ACTIVE |
| HMHi-grade Materials CO | Hesperia | CA | — | ◐ LIKELY ACTIVE |
| HMHi-Grade Materials-Indio Ready Mix | Indio | CA | 20–99 | ◐ LIKELY ACTIVE |
| HAHilcorp Alaska Greater Prudhoe Bay Gathering Centers and Well Pads | Prudhoe Bay | AK | — | ◐ LIKELY ACTIVE |
| HRHiline Redi-mix LLC | Shelby | MT | — | ◐ LIKELY ACTIVE |
| HPHi-way Paving | Nashville | TN | — | ◐ LIKELY ACTIVE |
| HIHolcim, INC. | Memphis | TN | — | ◐ LIKELY ACTIVE |
| HHHorner Holdings, INC - Arkadelphia Ready Mix Concrete Plant | Arkadelphia | AR | — | ◐ LIKELY ACTIVE |
| HBHughes Bros., INC. | Hampden | ME | 20–99 | ◐ LIKELY ACTIVE |
| HCHunt Crude Oil Melvin Station | Melvin | AL | — | ◐ LIKELY ACTIVE |
| HSHunt Southland Lumberton Refinery | Lumberton | MS | — | ◐ LIKELY ACTIVE |
| ICI.c.n. CO. Ready Mix | Bolivar | TN | — | ◐ LIKELY ACTIVE |
| IKIes - Kapolei | Kapolei | HI | — | ◐ LIKELY ACTIVE |
| IKImi Kentucky LLC - London 814 | London | KY | — | ◐ LIKELY ACTIVE |
| IKImi Kentucky LLC - Upton 865 | Upton | KY | — | ◐ LIKELY ACTIVE |
| IOImi Ohio, LLC - Milford | Milford | OH | — | ◐ LIKELY ACTIVE |
| IPImi Plant 101 | Greenfield | IN | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Bowling Green | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Scottsville | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Hopkinsville | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Dry Ridge | KY | — | ◐ LIKELY ACTIVE |