| HPHuey P. Stockstill Llc, Ready Mix Concrete #2 | Poplarville | MS | — | ◇ UNVERIFIED |
| HPHuey P Stockstill LLC - Tycer Plant #1 | Hammond | LA | — | ◇ UNVERIFIED |
| HPHurst Plant | Hurst | TX | — | ◇ UNVERIFIED |
| HCHydro Conduit, LLC Dba Rinker Materials | Miami | FL | — | ◇ UNVERIFIED |
| IPI-220 Plant | Jackson | MS | — | ◇ 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 - Burlington | Burlington | IA | — | ◇ 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 |
| ICIke Concrete | Fairplay | CO | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Elwin | IL | — | ◇ UNVERIFIED |
| IIImi Illinois | Clinton | IL | — | ◇ UNVERIFIED |
| IIImi Illinois, LLC | Tuscola | IL | — | ◇ UNVERIFIED |
| IIImi Irving Materials INC | Shelbyville | KY | — | ◇ UNVERIFIED |
| IKImi Kentucky LLC - Columbia Plant 811 | Columbia | KY | — | ◇ UNVERIFIED |
| IKImi Kentucky LLC - Edmonton 812 | Edmonton | KY | — | ◇ UNVERIFIED |
| IKImi Kentucky LLC - Paris 850 | Paris | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Bardstown | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Owenton | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Lebanon | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Bedford | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Owenton | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Frankfort | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Brandenburg | Morganfield | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Cynthianna 860 | Cynthiana | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Elizabethtown 871 | Elizabethtown | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Greensburg 849 | Brandenburg | KY | — | ◇ UNVERIFIED |
| ISImi South LLC Mt Washington 877 | Mount Washington | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Owensboro 531 | Owensboro | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Radcliff 872 | Radcliff | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Taylorsville Plant | Taylorsville | KY | — | ◇ UNVERIFIED |
| ITImi Tennessee, INC. - Sparta | Sparta | TN | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC | Clarksville | TN | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC - Cookeville | Cookeville | TN | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC – Dover | Dover | TN | — | ◇ UNVERIFIED |
| ITIMI TENNESSEE, LLC DBA IMI TN, LLC � LAWRENCEBURG | Lawrenceburg | TN | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC - La Vergne | La Vergne | TN | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC - Smithville | Smithville | TN | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC – Tullahoma | Tullahoma | TN | — | ◇ UNVERIFIED |
| ICImperial Concrete | Somerset | KY | — | ◇ UNVERIFIED |
| ICIndependence Coal Company, Inc., Macarther | Surveyor | WV | — | ◇ UNVERIFIED |
| ICIndian Creek Sand & Gravel | Sullivan | MO | — | ◇ UNVERIFIED |
| ICInfo Corner Materials INC | Springfield | IL | — | ◇ UNVERIFIED |
| ICIngram Concrete | Crowley | TX | — | ◇ UNVERIFIED |
| IRIngram Readymix Corpus Christi Omaha | Corpus Christi | TX | — | ◇ UNVERIFIED |
| ICInland Concrete Products INC | Fontana | CA | — | ◇ UNVERIFIED |
| IRInland Ready Mix, LLC - Fort Lupton | Fort Lupton | CO | — | ◇ UNVERIFIED |
| IPInterlock Paving Systems | Hampton | VA | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt | Sandpoint | ID | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt - Coeur Dalene Facility | Coeur D Alene | ID | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt - Freeman Pit Batch Plant | Post Falls | ID | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Post Falls | Post Falls | ID | — | ◇ UNVERIFIED |
| IBIpc Building Products Plant | Sugar Land | TX | — | ◇ UNVERIFIED |
| ICIron City Enterprises INC | Menominee | MI | — | ◇ UNVERIFIED |
| IIrving | Irving | TX | — | ◇ UNVERIFIED |
| IFIrving F Jensen CO INC | Castle Rock | CO | — | ◇ UNVERIFIED |
| IFIrving F Jensen CO INC Castle Rock Const | Berthoud | CO | — | ◇ UNVERIFIED |
| IMIrving Materials INC | Oak Grove | KY | — | ◇ UNVERIFIED |
| IMIrving Materials INC | Salem | IN | — | ◇ UNVERIFIED |
| IMIrving Materials INC | Lebanon | KY | — | ◇ UNVERIFIED |
| IMIrving Materials INC | Mount Carmel | IL | — | ◇ UNVERIFIED |
| IMIrving Materials, INC. | Nashville | TN | — | ◇ UNVERIFIED |
| IMIrving Materials INC Bloomfield | Bloomfield | IN | — | ◇ UNVERIFIED |
| IMIrving Materials INC Danville | Danville | IN | — | ◇ UNVERIFIED |
| IMIrving Materials Incorporated | Brazil | IN | — | ◇ UNVERIFIED |
| IMIrving Materials INC Remington | Remington | IN | — | ◇ UNVERIFIED |
| IRIsabella Ready Mix | Isabella | MO | — | ◇ UNVERIFIED |
| IRIsbell Ready Mix INC Huntsville | Huntsville | AL | — | ◇ UNVERIFIED |
| JPJackson #3 Production Facility | Gibsland | LA | — | ◇ UNVERIFIED |
| JSJacksonsonville South Mfg | Jacksonville | FL | — | ◇ UNVERIFIED |
| JPJacksonville Plant 604 | Jacksonville | AR | — | ◇ UNVERIFIED |
| JRJaco Ready Mix | Henrietta | MO | — | ◇ UNVERIFIED |
| JPJarrell Plant | Jarrell | TX | — | ◇ UNVERIFIED |
| JCJas Construction, LLC | Altoona | IA | — | ◇ UNVERIFIED |
| JBJay Battenberg | Bonner Springs | KS | — | ◇ UNVERIFIED |
| JCJ C Howard Concrete Batch Plt | Carnegie | PA | — | ◇ UNVERIFIED |
| JCJefferson City Concrete Plant / Bwi Etn Llc, Dba Blue Water Industries Dba Bwi C | Jefferson City | TN | — | ◇ UNVERIFIED |
| JCJenna Concrete | Bronx | NY | — | ◇ UNVERIFIED |
 Jensen Enterprises INC Dba Jensen Precast | Ontario | CA | — | ◇ UNVERIFIED |
| JRJerome Redi-mix | Jerome | ID | — | ◇ UNVERIFIED |
| JAJesse A. Howland & Sons | Freehold | NJ | — | ◇ UNVERIFIED |
| JRJessup Ready Mix Concrete | Jessup | MD | — | ◇ UNVERIFIED |
| JCJewell Concrete Products | Waco | TX | — | ◇ UNVERIFIED |
| JGJ & G Dirt Works LLC | Riverdale | NE | — | ◇ UNVERIFIED |
| JJJ J Ferguson Sand and Gravel Inc, Winona | Winona | MS | — | ◇ UNVERIFIED |
| JOJme of Monticello (portable) | Lincoln | KS | — | ◇ UNVERIFIED |
| JCJohnson Concrete Co-eastern | Willow Springs | NC | — | ◇ UNVERIFIED |
| JCJohnson Concrete Company | Salisbury | NC | — | ◇ UNVERIFIED |
| JBJohnsons Block and Concrete CO INC | Henderson | NC | — | ◇ UNVERIFIED |
| JSJonathan S Burns Enterprises Llc, Caledonia Ready Mix | Steens | MS | — | ◇ UNVERIFIED |
| JAJones and Son INC | Lawrenceville | IL | — | ◇ UNVERIFIED |
| JSJones & Sons Bloomfield | Bloomfield | IN | — | ◇ UNVERIFIED |
| JCJuniata Concrete CO - Mifflintown Plant 2 | Mifflintown | PA | — | ◇ UNVERIFIED |
| JCJuniata Concrete CO - Newport Plant 3 | Newport | PA | — | ◇ UNVERIFIED |
