| KWKiewit Western CO. (astec 500 Abp) | Out of State | CO | — | ◇ UNVERIFIED |
| KCKilbarger Construction, INC. | Logan | OH | — | ◇ UNVERIFIED |
 Kilgore Companies LLC | American Fork | UT | — | ◇ UNVERIFIED |
| Kilgore Companies LLC | Bluffdale | UT | — | ◇ UNVERIFIED |
| KCKillough Const. (asphalt Plant) (portable) | Ottawa | KS | — | ◇ UNVERIFIED |
| KAKing Asphalt Number 4 | Spartanburg | SC | — | ◇ UNVERIFIED |
| KGKing General Contractors INC | Bristol | VA | — | ◇ UNVERIFIED |
| KRKing Road Materials INC | Troy | NY | — | ◇ UNVERIFIED |
| KRKingsway Ready Mix, INC. | Hendersonville | NC | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete - Crossville Plant | Crossville | AL | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete,inc. | Bessemer | AL | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete, INC. - Stevenson Plant | Stevenson | AL | — | ◇ UNVERIFIED |
| KRKirksville Ready Mix North | Kirksville | MO | — | ◇ UNVERIFIED |
| KPKlamath Pacific Edison Plant | Klamath Falls | OR | — | ◇ UNVERIFIED |
| KCKlett Construction Company INC | Paw Paw | MI | — | ◇ UNVERIFIED |
| KBKlug Bros INC | Moundsville | WV | — | ◇ UNVERIFIED |
| KRKnife River - 777-2699 | Kalispell | MT | — | ◇ UNVERIFIED |
| KRKnife River Albertville Ready Mix | Monticello | MN | — | ◇ UNVERIFIED |
| KRKnife River Billings East Site | Billings | MT | — | ◇ UNVERIFIED |
| KRKnife River Cheyenne | Cheyenne | WY | — | ◇ UNVERIFIED |
| KRKnife River CORP N Central Baxter | Baxter | MN | — | ◇ UNVERIFIED |
| KRKnife River CORP N Central Forest Lake | Forest Lake | 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 Corporation - Mountain West - Cascade | Cascade | ID | — | ◇ UNVERIFIED |
| KRKnife River Corporation - Northwest | Dayton | OR | — | ◇ UNVERIFIED |
| KRKnife River Corporation - South Waco Asphalt Plant | Waco | TX | — | ◇ UNVERIFIED |
| KRKnife River Corp-south Bryan Asphalt Plant | Bryan | TX | — | ◇ UNVERIFIED |
| KRKnife River Corvallis | Corvallis | OR | — | ◇ UNVERIFIED |
| KRKnife River Farmington Asphalt | Beaverton | OR | — | ◇ UNVERIFIED |
| KRKnife River Glencoe Ready Mix | Glencoe | MN | — | ◇ UNVERIFIED |
| KRKnife River Isanti Ready Mix | Isanti | MN | — | ◇ UNVERIFIED |
| KRKnife River Kirtland Pit | Central Point | OR | — | ◇ UNVERIFIED |
| KRKnife River Little Falls South Ready Mix | Little Falls | MN | — | ◇ UNVERIFIED |
| KRKnife River Materials | Coos Bay | OR | — | ◇ UNVERIFIED |
| KRKnife River Materials | Klamath Falls | OR | — | ◇ UNVERIFIED |
| KRKnife River Materials Yard | Casper | WY | — | ◇ UNVERIFIED |
| KRKnife River North Central Bismarck Rock Island | Bismarck | ND | — | ◇ UNVERIFIED |
| KRKnife River Redmond Asphalt | Redmond | OR | — | ◇ UNVERIFIED |
| KRKnife River St. Cloud Ready Mix | Saint Cloud | MN | — | ◇ UNVERIFIED |
| KRKnife River St. Joseph Ready Mix | Saint Joseph | MN | — | ◇ UNVERIFIED |
| KRKnight Redi-mix INC. - Plant 4 | Summerville | SC | — | ◇ UNVERIFIED |
| KRKnights Redi-mix Concrete Plant 2 | Walterboro | SC | — | ◇ UNVERIFIED |
| KRKnight's Redi Mix Jedburg Plant 4 | Summerville | SC | — | ◇ UNVERIFIED |
| KRKnights Redi-mix Midlands LLC Plant 6 Blythewood | Blythewood | SC | — | ◇ UNVERIFIED |
| KRKnoll's Ready Mix | Glendive | MT | — | ◇ UNVERIFIED |
| KAKoch Asphalt CO | Rock Falls | IL | — | ◇ UNVERIFIED |
| KFKoch Fuel CO Materials Div @ Pettys Island | Pennsauken | NJ | — | ◇ UNVERIFIED |
| KMKoch Material CO | Chicago | IL | — | ◇ UNVERIFIED |
| KMKoch Materials CO | Elberta | MI | — | ◇ UNVERIFIED |
