| HCH&t Contractors, LLC | Milton | FL | — | ◇ UNVERIFIED |
| HCHubbard Construction Company | Davenport | FL | — | ◇ UNVERIFIED |
| HCHubbard Construction Company | Jacksonville | FL | — | ◇ UNVERIFIED |
| HCHubbard Construction Company | Lakeland | FL | — | ◇ UNVERIFIED |
| HCHubbard Construction Dba Orlando Paving | Orlando | FL | — | ◇ UNVERIFIED |
| HOHubbell Okc Family | Oklahoma City | OK | — | ◇ UNVERIFIED |
| HOHubert Oye & Sons INC - Asphalt Products | Fargo | ND | — | ◇ UNVERIFIED |
| HMHudson Materials CO | Knoxville | TN | — | ◇ UNVERIFIED |
| HPHuey P Stockstill LLC | Gulfport | MS | — | ◇ 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 |
| HSHuey Stockstill Inc, Asphalt Plant Number Four | Wiggins | MS | — | ◇ UNVERIFIED |
| HPHuntsman Pigments Americas, LLC (dba Southern Color) | Cartersville | GA | — | ◇ UNVERIFIED |
| HPHurst Plant | Hurst | TX | — | ◇ UNVERIFIED |
| HCHutchens Construction | Purdy | MO | — | ◇ UNVERIFIED |
| HCHutchens Construction-belle Vista Plant | Jane | MO | — | ◇ UNVERIFIED |
| HCHutchens Construction Company, LLC - Springdale | Bethel Heights | AR | — | ◇ UNVERIFIED |
| HCHydro Conduit | Roanoke | TX | — | ◇ UNVERIFIED |
| HCHydro Conduit, LLC Dba Rinker Materials | Miami | FL | — | ◇ UNVERIFIED |
| IPI-220 Plant | Jackson | MS | — | ◇ UNVERIFIED |
| ICIa Const Corp/starbrick Plt | Warren | PA | — | ◇ UNVERIFIED |
| ICIa Const Warren Batch Plt | Warren | PA | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company | Boise | ID | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company Site | Caldwell | ID | — | ◇ UNVERIFIED |
| IMIdaho Materials and Construction | Eagle | ID | — | ◇ UNVERIFIED |
| ISIdaho Sand and Gravel 00073 | Portable | ID | — | ◇ UNVERIFIED |
| ISIdaho Sand & Gravel 00256 | Portable | ID | — | ◇ UNVERIFIED |
| ISIdaho Sand & Gravel 00351 | Portable | ID | — | ◇ UNVERIFIED |
| ISIdaho Sand & Gravel, Jack B Parsons CO | Portable | ID | — | ◇ UNVERIFIED |
| ICIdeal Construction | Staples | MN | — | ◇ 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-amity | Kansas City | MO | — | ◇ UNVERIFIED |
| IIIdeker INC. (portable) (air) | Wathena | KS | — | ◇ UNVERIFIED |
| ICIke Concrete | Fairplay | CO | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Elwin | IL | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Divernon | 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 | Owenton | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Frankfort | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Lebanon | KY | — | ◇ UNVERIFIED |
| ISImi South LLC | Bedford | 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 - Outer Loop 832 | Louisville | 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 |
| ICIndependence Const Materials, Cheswold | Cheswold | DE | — | ◇ UNVERIFIED |
| IRIndependence Recycling Jacksonville | Jacksonville | FL | — | ◇ UNVERIFIED |
| ICIndependent Concrete Pipe | Plainville | MA | — | ◇ UNVERIFIED |
| ICIndian Creek Sand & Gravel | Sullivan | MO | — | ◇ UNVERIFIED |
| IMIndustrial Minerals CO | Sacramento | CA | — | ◇ UNVERIFIED |
| ICInfo Corner Materials INC | Springfield | IL | — | ◇ UNVERIFIED |
| ICIngram Concrete | Crowley | TX | — | ◇ UNVERIFIED |
| IRIngram Readymix Corpus Christi Omaha | Corpus Christi | TX | — | ◇ UNVERIFIED |
| IAInland Asphalt CO | Portable | ID | — | ◇ UNVERIFIED |
| ICInland Concrete Products INC | Fontana | CA | — | ◇ UNVERIFIED |
| IRInland Ready Mix, LLC - Fort Lupton | Fort Lupton | CO | — | ◇ UNVERIFIED |
| ILInroads, LLC | Elkhart | IA | — | ◇ UNVERIFIED |
| ILInroads, LLC | Des Moines | IA | — | ◇ UNVERIFIED |
| IPIntegrated Photonics Incorporated | Hillsborough | NJ | — | ◇ UNVERIFIED |
| IPInterlock Paving Systems | Hampton | VA | — | ◇ UNVERIFIED |
| IAInterstate Asphalt LLC | Monee | IL | — | ◇ 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 and Asphalt Sandpoint | Sandpoint | ID | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Cda | Coeur D Alene | ID | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Post Falls | Post Falls | ID | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Wyoming | Rathdrum | ID | — | ◇ UNVERIFIED |
| ICInterstate Custom Crushing, LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| IHInterstate Highway Const. (portable) (air) | Wamego | KS | — | ◇ UNVERIFIED |
| IBIpc Building Products Plant | Sugar Land | TX | — | ◇ UNVERIFIED |