| KKK009-020 Ka 7174-01 I | Leoville | KS | — | ◇ UNVERIFIED |
| KKK025-077 Ka 6737-01 I | Atwood | KS | — | ◇ UNVERIFIED |
| KKK027-100 Ka 7073-01 Wallace CO. | Sharon Springs | KS | — | ◇ UNVERIFIED |
| KCK-5 Construction CORP | Chicago | IL | — | ◇ UNVERIFIED |
| KSKaiser Sand & Gravel Company | Santa Rosa | CA | — | ◇ UNVERIFIED |
| KVKankakee Valley Const CO INC | Cullom | IL | — | ◇ UNVERIFIED |
| KVKankakee Valley Const CO INC | Streator | IL | — | ◇ UNVERIFIED |
| KVKankakee Valley Const CO INC | Cullom | IL | — | ◇ UNVERIFIED |
| KVKankakee Valley Construction CO INC | Kankakee | IL | — | ◇ UNVERIFIED |
| KVKankakee Valley Construction CO INC | Kankakee | IL | — | ◇ UNVERIFIED |
| KAKansas Asphalt INC. | Roseville | CA | — | ◇ UNVERIFIED |
| KPKansas Paving Cmi Asphalt (air) | Wichita | KS | — | ◇ UNVERIFIED |
| KAKasota Asphalt | Kasota | MN | — | ◇ UNVERIFIED |
| KKKay & Kay Contracting LLC - Portable Plant | London | KY | — | ◇ UNVERIFIED |
| KIKda INC | Warrenton | OR | — | ◇ UNVERIFIED |
| KDK. Dolan Corporation | Blairsville | PA | — | ◇ UNVERIFIED |
| KCKe&g Construction Hot Plant | Sierra Vista | AZ | — | ◇ UNVERIFIED |
| KAKeigley Asphalt Plant | Genola | UT | — | ◇ UNVERIFIED |
| KCKeller Construction Company St. Joseph | Saint Joseph | MO | — | ◇ UNVERIFIED |
| KPKelly Paving, Inc., Benwood Plant | Mcmechen | WV | — | ◇ UNVERIFIED |
| KPKelly Paving, Inc., St. Marys | Saint Marys | WV | — | ◇ UNVERIFIED |
| KCKelterite CORP | Downey | CA | — | ◇ UNVERIFIED |
| KWKens Welding Services | Compton | CA | — | ◇ UNVERIFIED |
| KOKent's Oil Service INC | Stockton | CA | — | ◇ UNVERIFIED |
| KOKents Oil Service INC Dba Pacific Northwest - Sacramento | Sacramento | CA | — | ◇ UNVERIFIED |
| KOKentucky Oil & Refinery CO INC | Floyd County | KY | — | ◇ UNVERIFIED |
| KSKentucky Stone | Hayden | IN | — | ◇ UNVERIFIED |
| KCKenway Contracting INC | Bowling Green | KY | — | ◇ UNVERIFIED |
| KPKenway Paving LLC - Portable Plant | Bowling Green | KY | — | ◇ UNVERIFIED |
| KCKernen Construction | Blue Lake | CA | — | ◇ UNVERIFIED |
| KOKern Oil & Refining CO. | Bakersfield | CA | — | ◇ UNVERIFIED |
| KVKe Vas CO | Jacksonville | IL | — | ◇ UNVERIFIED |
| KCKewaunee County Asphalt Plant | Casco | WI | — | ◇ UNVERIFIED |
| KSKeyesport Sand & Gravel-pit 2 | Keyesport | IL | — | ◇ UNVERIFIED |
| KRKey Recycling, LLC | Baltimore | MD | — | ◇ UNVERIFIED |
| KSKey Seal Products INC | Turlock | CA | — | ◇ UNVERIFIED |
| KCK-five Construction CO | Naperville | IL | — | ◇ UNVERIFIED |
| KCK-five Construction CO | Markham | IL | — | ◇ UNVERIFIED |
| KCK-five Construction CO | Chicago | IL | — | ◇ UNVERIFIED |
| KCK-five Construction CORP | Lemont | IL | — | ◇ UNVERIFIED |
| KHK-five Hodgkins LLC | Hodgkins | IL | — | ◇ UNVERIFIED |
| KCKgm Contractors INC - Nonmetallic | Angora | MN | — | ◇ UNVERIFIED |
| KPKielbasa Pit | Duchesne | UT | — | ◇ UNVERIFIED |
| KWKiewet Western Company | Littleton | CO | — | ◇ UNVERIFIED |
| KAKiewit - Aurora Asphalt Plant | Aurora | CO | — | ◇ UNVERIFIED |
| KCKiewit - Colorado Springs Asphalt Plant | Colorado Springs | CO | — | ◇ UNVERIFIED |
| KIKiewit Inf. - Portable Asphalt Plant | Englewood | CO | — | ◇ UNVERIFIED |
| KPKiewit Pacific Company | Bakersfield | CA | — | ◇ UNVERIFIED |
| KSKiewit - Sedalia Asphalt Plant | Sedalia | CO | — | ◇ UNVERIFIED |
| KWKiewit Western | Littleton | CO | — | ◇ UNVERIFIED |
| KWKiewit Western CO. (astec 500 Abp) | Out of State | CO | — | ◇ UNVERIFIED |
| KWKiewit Western CO. (astec Abp) | Colorado Springs | CO | — | ◇ UNVERIFIED |
 Kilgore Companies LLC | American Fork | UT | — | ◇ UNVERIFIED |
| Kilgore Companies LLC | Benjamin | UT | — | ◇ UNVERIFIED |
| Kilgore Companies LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| Kilgore Companies LLC | Bluffdale | UT | — | ◇ UNVERIFIED |
| Kilgore Companies, LLC - Ogden Hot Mix Asphalt Plant | Weber County | UT | — | ◇ UNVERIFIED |
| KMKinder Morgan | Watford City | ND | — | ◇ UNVERIFIED |
| KMKinder Morgan Baltimore Transload Terminal | Baltimore | MD | — | ◇ UNVERIFIED |
| KCKinder-morgan Company-indianola Refinery | Indianola | PA | — | ◇ UNVERIFIED |
| KMKinder Morgan Operating LP a -bickerstaff Rd | Richmond | VA | — | ◇ UNVERIFIED |
| KAKing Asphalt # 3 New Plant | Simpsonville | SC | — | ◇ UNVERIFIED |
| KAKing Asphalt INC | Pacolet | SC | — | ◇ UNVERIFIED |
| KAKing Asphalt, INC. - Concord Asphalt Plant | Concord | NC | — | ◇ UNVERIFIED |
| KAKing Asphalt, INC. - Concord Asphalt Plant | Concord | NC | — | ◇ UNVERIFIED |
| KAKing Asphalt, INC. - Gastonia Asphalt Plant | Gastonia | NC | — | ◇ UNVERIFIED |
| KAKing Asphalt, INC. - Wilmington Asphalt Plant | Castle Hayne | NC | — | ◇ UNVERIFIED |
| KAKing Asphalt Liberty Plant | Liberty | SC | — | ◇ UNVERIFIED |
| KAKing Asphalt Number 4 | Spartanburg | SC | — | ◇ UNVERIFIED |
| KBKing Blacktop LLC | Byron | IL | — | ◇ UNVERIFIED |
| KCKingsburg Cogeneration Facility | Kingsburg | CA | — | ◇ UNVERIFIED |
| KCKiowa CO. Haviland (stormwater) | Haviland | KS | — | ◇ UNVERIFIED |
| KLKirkland LLC | Kirkland | IL | — | ◇ UNVERIFIED |
| KJKiryas Joel Paving Inc. | Monroe | NY | — | ◇ UNVERIFIED |
| KAKittrell Asphalt and Ready Mix Distribution Center | Kittrell | NC | — | ◇ UNVERIFIED |
| KPKlamath Pacific Edison Plant | Klamath Falls | OR | — | ◇ UNVERIFIED |
| KPKlamath Pacific Flowers Pit | Klamath Falls | OR | — | ◇ UNVERIFIED |
| KCKlett Construction Company INC | Paw Paw | MI | — | ◇ UNVERIFIED |
| KCKlett Construction Company INC | Cassopolis | MI | — | ◇ UNVERIFIED |
| KBKlug Bros INC | Moundsville | WV | — | ◇ UNVERIFIED |
| KRKnife River Central Minnesota Asphalt Plant 3 | Saint Cloud | MN | — | ◇ UNVERIFIED |
| KRKnife River Central Minnesota Asphalt Plant 5 | Harris | MN | — | ◇ UNVERIFIED |
| KRKnife River CORP N Central - Plant 5 | North Branch | MN | — | ◇ UNVERIFIED |
| KRKnife River CORP N Central - Plant 7 | Little Falls | MN | — | ◇ UNVERIFIED |
| KRKnife River CORP N Central Sauk Rapids | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| KRKnife River Haman | Rathdrum | ID | — | ◇ UNVERIFIED |
| KRKnife River INC | Colville | WA | — | ◇ UNVERIFIED |
| KRKnife River Key Rock | Cheney | WA | — | ◇ UNVERIFIED |
| KRKnife River Laramie | Laramie | WY | — | ◇ UNVERIFIED |
| KAKoch Asphalt CO | Rock Falls | IL | — | ◇ UNVERIFIED |
| KAKoch Asphalt Solutions Southwest | Phoenix | AZ | — | ◇ UNVERIFIED |
| KFKoch Fuel CO Materials Div @ Pettys Island | Pennsauken | NJ | — | ◇ UNVERIFIED |
| KFKoch Fuel CO Materials Div @ State Street Ind Pk | Perth Amboy | NJ | — | ◇ UNVERIFIED |
| KMKoch Material CO | Chicago | IL | — | ◇ UNVERIFIED |
| KMKoch Materials CO | Northumberland | PA | — | ◇ UNVERIFIED |
| KMKoch Materials CO | Elberta | MI | — | ◇ UNVERIFIED |
| KMKoch Materials CO. | York | PA | — | ◇ UNVERIFIED |
| KMKoch Materials Company | Moberly | MO | — | ◇ UNVERIFIED |
| KMKoch Materials Company | Heath | OH | — | ◇ UNVERIFIED |
| KMKoch Materials Company-closed | Elberta | MI | — | ◇ UNVERIFIED |
