| KRKen's Redi-mix INC. | Goodrich | MI | — | ◇ UNVERIFIED |
| KCKentucky Concrete INC E-town # 1 | Elizabethtown | KY | — | ◇ UNVERIFIED |
| KCKentucky Concrete INC - Plant 2 & 6 | Radcliff | KY | — | ◇ UNVERIFIED |
| KSKentucky Stone | Hayden | IN | — | ◇ UNVERIFIED |
| KPKerkstra Precast INC | Grandville | MI | — | ◇ UNVERIFIED |
| KHKerr's Hickory Ready-mixed Concrete Co., INC. | Lenoir | NC | — | ◇ UNVERIFIED |
| KHKerrs Hickory Ready-mixed Concrete Co., Inc., Maiden Plant | Maiden | NC | — | ◇ UNVERIFIED |
| KHKerr's Hrm Concrete Co., INC. - Morganton / Industrial Blvd. | Morganton | NC | — | ◇ UNVERIFIED |
| KVKe Vas CO | Jacksonville | IL | — | ◇ UNVERIFIED |
| KSKeyesport Sand & Gravel-pit 2 | Keyesport | IL | — | ◇ UNVERIFIED |
| KLKey Largo Facility | Key Largo | FL | — | ◇ UNVERIFIED |
| KAKeymar Aggregates Engineering | Keymar | MD | — | ◇ UNVERIFIED |
| KCKeys Concrete Industries, Rm2 | Spring Hill | FL | — | ◇ UNVERIFIED |
| KLKeystone Lime - Garrett CO Hot Mix | Friendsville | MD | — | ◇ UNVERIFIED |
| KCK-five Construction CO | Chicago | IL | — | ◇ UNVERIFIED |
| KCK-five Construction CORP | Lemont | IL | — | ◇ UNVERIFIED |
| KCK-five Construction INC | North Aurora | IL | — | ◇ UNVERIFIED |
| KCKgm Contractors INC - Nonmetallic | Angora | MN | — | ◇ UNVERIFIED |
| K4Kienstra 44 Llc-rolla | Rolla | MO | — | ◇ UNVERIFIED |
| K4Kienstra 44, LLC - Salem | Salem | MO | — | ◇ UNVERIFIED |
| KBKienstra Block & Brick LLC | Wood River | IL | — | ◇ UNVERIFIED |
| KMKienstra Materials CO LLC | Saint Louis | MO | — | ◇ UNVERIFIED |
| KMKienstra Materials Company | Overland | MO | — | ◇ UNVERIFIED |
| KRKienstra Ready Mix | O Fallon | MO | — | ◇ UNVERIFIED |
| KAKiewit - Astec 500 Tph Asphalt Drum Mix Plant Cuba Site | Clayton | NM | — | ◇ 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 |
| KIKiewit Infrastructure South CO | Van Buren | AR | — | ◇ UNVERIFIED |
| KPKiewit Pacific Company | Bakersfield | CA | — | ◇ UNVERIFIED |
| KWKiewit Western | Littleton | CO | — | ◇ UNVERIFIED |
| 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 |
| 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 |
