| HPHanson Pipe and Products INC Salem Plant 2 | Salem | VA | — | ◐ LIKELY ACTIVE |
| HRHard Rock & Redi Mix INC Main Plant | Salida | CO | — | ◐ LIKELY ACTIVE |
| HCHarper Company | Hebron | SC | — | ◐ LIKELY ACTIVE |
| HMHavin Material Service-st Clair Plant | Saint Clair | MO | — | ◐ LIKELY ACTIVE |
| HFHeber-binggeli Facility | Charleston | UT | — | ◐ LIKELY ACTIVE |
| HHHi Hill Ready Mix Company | Seymour | IN | — | ◐ LIKELY ACTIVE |
| HBHilltop Basic Resources INC. Downtown Ready Mix | Cincinnati | OH | — | ◐ LIKELY ACTIVE |
| HIHolcim-wcr INC - Francis | Longmont Area | CO | — | ◐ LIKELY ACTIVE |
| HCHolroyd CO Nisqually Pit | Olympia | WA | — | ◐ LIKELY ACTIVE |
| HCHommel Concrete Company | Newport | TN | — | ◐ LIKELY ACTIVE |
| HDHouston Division of B & B Concrete CO INC. | Houston | MS | — | ◐ LIKELY ACTIVE |
| HPHuey P Stockstill LLC - Tycer Plant #2 | Hammond | LA | — | ◐ LIKELY ACTIVE |
| IVIllinois Valley Paving CO | Decatur | IL | — | ◐ LIKELY ACTIVE |
| IKImi Kentucky LLC | Richmond | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Oak Grove (christian) | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Warsaw | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Campbellsville | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Carrollton | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Lawrenceburg | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Georgetown (scott) | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC | Madisonville | KY | — | ◐ LIKELY ACTIVE |
| ISImi South LLC - Harrodsburg 876 | Harrodsburg | KY | — | ◐ LIKELY ACTIVE |
| ITImi Tennessee, LLC | Clarksville | TN | — | ◐ LIKELY ACTIVE |
| ITImi Tennessee, LLC Dba Imi-tn, INC. - Franklin | Franklin | TN | — | ◐ LIKELY ACTIVE |
| ITImi Tennessee, LLC Dba Imi Tn, LLC - Cumberland City | Cumberland City | TN | — | ◐ LIKELY ACTIVE |
| IIImi -tn, INC. | Jamestown | TN | — | ◐ LIKELY ACTIVE |
| IRIngram Readymix Boerne | Boerne | TX | — | ◐ LIKELY ACTIVE |
| IPInternational Petroleum CORP | Plant City | FL | — | ◐ LIKELY ACTIVE |
| IPInternational Petroleum CORP | Wilmington | DE | — | ◐ LIKELY ACTIVE |
| IHInterstate Highway Const- Gen 72-34 | Fountain 3.2 Mi. W of | CO | — | ◐ LIKELY ACTIVE |
| IHInterstate Highway Construction | Denver | CO | — | ◐ LIKELY ACTIVE |
| IMIrving Materials INC Indpls Plant 5 | Indianapolis | IN | — | ◐ LIKELY ACTIVE |
| IMIrving Materials INC Kinser Pike Plt | Bloomington | IN | — | ◐ LIKELY ACTIVE |
| JRJahna Ranch Readymix Facility I | Davenport | FL | — | ◐ LIKELY ACTIVE |
| JAJ and J Concrete | Coldwater | MS | — | ◐ LIKELY ACTIVE |
| JGJ G Talley 15 #2 Tank Battery | Haynesville | LA | — | ◐ LIKELY ACTIVE |
| JCJohnson Concrete Company | Concord | NC | — | ◐ LIKELY ACTIVE |
| JCJ&r Constructors Group (asphalt Plant)(portable)(air) | Portable | KS | — | ◐ LIKELY ACTIVE |
| JCJ&s Concrete Number 1 Old | Lancaster | SC | — | ◐ LIKELY ACTIVE |
| KCKay Concrete Materials-aurora | Aurora | MO | — | ◐ LIKELY ACTIVE |
| KCKelly's Concrete & Building Materials INC | Fremont | CA | — | ◐ LIKELY ACTIVE |
| KCKentucky Concrete INC E-town # 1 | Elizabethtown | KY | — | ◐ LIKELY ACTIVE |
| KCKentucky Concrete INC - Shelby CO Concrete INC | Shelbyville | KY | — | ◐ LIKELY ACTIVE |
| KOKentucky Oil & Refinery CO INC | Floyd County | KY | — | ◐ LIKELY ACTIVE |
| KRKern's Ready Mixed Concrete, INC. | Stillwater | OK | — | ◐ LIKELY ACTIVE |
| KRKerr's Redi Mix INC | Centre | AL | — | ◐ LIKELY ACTIVE |
| KCKienstra Concrete (missouri Bottom Rd) | Bridgeton | MO | — | ◐ LIKELY ACTIVE |
| KCKingsburg Cogeneration Facility | Kingsburg | CA | — | ◐ LIKELY ACTIVE |
| KCKuhlman Concrete, LLC | Fort Myers | FL | — | ◐ LIKELY ACTIVE |
| LPLafarge Powers Ready Mix | Carbondale | CO | — | ◐ LIKELY ACTIVE |