| HRHolliday Rock Chino 18 | Chino | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HRHolliday Rock Colton Plant 4 | Bloomington | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HRHolliday Rock Company, INC | Littlerock | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HRHolliday Rock Company - Van Nuys | Van Nuys | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HRHolliday Rock San Bernardino 29 | San Bernardino | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HRHolliday Rock Westminster 20 | Westminster | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HCHollingsworth Concrete Products INC. | Carrollton | GA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HCHolroyd CO Lakewood | Lakewood | WA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HRHolyoke Ready Mix | Holyoke | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HLHome Lumber Reddimix | Hazard | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HRHood River Sand and Gravel | Hood River | OR | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HPHuey P. Stockstill Llc, Asphalt Plant No. 4 | Wiggins | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HPHuey P Stockstill Llc, Picayune | Picayune | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HPHuey P. Stockstill Llc, Ready Mix Concrete #2 | Poplarville | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HPHuey P Stockstill LLC - Tycer Plant #1 | Hammond | LA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HPHurst Plant | Hurst | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IPI-220 Plant | Jackson | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company Site | Caldwell | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC | Elvaston | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO Inc-canton | Canton | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO Inc-kahoka | Kahoka | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC - Keokuk | Keokuk | IA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC - Knoxville | Knoxville | IA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IIIdeker INC. (portable) (air) | Wathena | KS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ICIke Concrete | Fairplay | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Elwin | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| IIImi Illinois | Clinton | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IIImi Illinois, LLC | Tuscola | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IKImi Kentucky LLC - Columbia Plant 811 | Columbia | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IKImi Kentucky LLC - Edmonton 812 | Edmonton | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IKImi Kentucky LLC - Paris 850 | Paris | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC | Frankfort | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC | Owenton | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC | Bedford | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC | Bardstown | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC | Lebanon | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC - Cynthianna 860 | Cynthiana | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC - Elizabethtown 871 | Elizabethtown | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC Mt Washington 877 | Mount Washington | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC - Owensboro 531 | Owensboro | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC - Radcliff 872 | Radcliff | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ISImi South LLC - Taylorsville Plant | Taylorsville | KY | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ITImi Tennessee, INC. - Sparta | Sparta | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC | Clarksville | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC - Cookeville | Cookeville | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC – Dover | Dover | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC - La Vergne | La Vergne | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC - Lawrenceburg | Lawrenceburg | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC - Smithville | Smithville | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC Dba Imi Tn, LLC – Tullahoma | Tullahoma | TN | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
