| IAIdaho Asphalt Supply Post Falls | Post Falls | ID | — | ◇ UNVERIFIED |
| IMIdaho Materials and Construction | Eagle | ID | — | ◇ UNVERIFIED |
| IMIesi Mo Champs Landfill | Maryland Heights | MO | — | ◇ UNVERIFIED |
| ICIngram Concrete | Crowley | TX | — | ◇ UNVERIFIED |
| IAInman Asphalt Incorporated | Inman | SC | — | ◇ UNVERIFIED |
| IPIntegrated Photonics Incorporated | Hillsborough | NJ | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt | Sandpoint | ID | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Post Falls | Post Falls | ID | — | ◇ UNVERIFIED |
| IBIpc Building Products Plant | Sugar Land | TX | — | ◇ UNVERIFIED |
| IRIroquois Rock Products/ Henrietta Drum | Rochester | NY | — | ◇ UNVERIFIED |
| IIrving | Irving | TX | — | ◇ UNVERIFIED |
| JRJackson Ready-mix Plant 26 | Canton | MS | — | ◇ UNVERIFIED |
| JRJackson Ready-mix Plant 4 | Byram | MS | — | ◇ UNVERIFIED |
| JRJackson Ready-mix Plant 8 | Brandon | MS | — | ◇ UNVERIFIED |
| JHJames Hardie Building Products | Tacoma | WA | — | ◇ UNVERIFIED |
| JHJames Hardie Building Products | Tacoma | WA | — | ◇ UNVERIFIED |
| JHJames Hardie Building Products | Waxahachie | TX | — | ◇ UNVERIFIED |
| JHJames Hardie Building Products | Cleburne | TX | — | ◇ UNVERIFIED |
| JHJames Hardie Building Products | Plant City | FL | — | ◇ UNVERIFIED |
| JMJamesville Mix Plant | Jamesville | NY | — | ◇ UNVERIFIED |
| JPJarrell Plant | Jarrell | TX | — | ◇ UNVERIFIED |
| JBJay Battenberg | Bonner Springs | KS | — | ◇ UNVERIFIED |
| JCJenna Concrete | Bronx | NY | — | ◇ UNVERIFIED |
| JPJensen Precast | North Las Vegas | NV | — | ◇ UNVERIFIED |
| JPJensen Precast | Phoenix | AZ | — | ◇ UNVERIFIED |
| JPJensen Precast | Tucson | AZ | — | ◇ UNVERIFIED |
| JPJensen Precast | Sparks | NV | — | ◇ UNVERIFIED |
| JPJensen Precast | North Las Vegas | NV | — | ◇ UNVERIFIED |
| JRJerome Redi-mix | Jerome | ID | — | ◇ UNVERIFIED |
| JCJewell Concrete Products | Waco | TX | — | ◇ UNVERIFIED |
| JFJ F Shea CO INC | Redding | CA | — | ◇ UNVERIFIED |
| JSJf Shea Constr Fawndale Rock & Asphalt | Redding | CA | — | ◇ UNVERIFIED |
| JMJg Maclellan Concrete CO INC | Wakefield | MA | — | ◇ UNVERIFIED |
| JMJg Mclellan Concrete | Lowell | MA | — | ◇ UNVERIFIED |
| JBJoint Base Elmendorf-richardson | Anchorage | AK | — | ◇ UNVERIFIED |
| JGJtl Group Belgrade Dba Knife River - Belgrade | Belgrade | MT | — | ◇ UNVERIFIED |
| JGJtl Group Billings (dba - Knife River Billings) | Billings | MT | — | ◇ UNVERIFIED |
| JGJtl Group-wilkie Street | Missoula | MT | — | ◇ UNVERIFIED |
| KCKansas City Readymix Dba Talon Concrete & Aggregates | Kansas City | KS | — | ◇ UNVERIFIED |
| KCKarnak CORP | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| KPKaty Plant | Katy | TX | — | ◇ UNVERIFIED |
| KRKelso Rm | Kelso | WA | — | ◇ UNVERIFIED |
| KPKennedale Plant | Kennedale | TX | — | ◇ UNVERIFIED |
| KDKentucky Department of Military Affairs | Greenville | KY | — | ◇ UNVERIFIED |
| KMKienstra Materials CO LLC | Saint Louis | MO | — | ◇ UNVERIFIED |
| KDKilgore Dba Peak Mat - Fraser Plants | Fraser Area | CO | — | ◇ UNVERIFIED |
| KRKing Road Materials Cordell Road Facility | Schenectady | NY | — | ◇ UNVERIFIED |
| KRKnife River | Nampa | ID | — | ◇ UNVERIFIED |
| KRKnife River - 777-2699 | Kalispell | MT | — | ◇ UNVERIFIED |
| KRKnife River Albertville Ready Mix | Monticello | MN | — | ◇ UNVERIFIED |