| JCJohnson Concrete Company | Willow Spring | NC | — | ◇ UNVERIFIED |
| JCJohnson Concrete Company | Lexington | NC | — | ◇ UNVERIFIED |
| JBJohnsons Block and Concrete CO INC | Henderson | NC | — | ◇ UNVERIFIED |
| JSJohnson Stewart LLC - Landfill | Mesa | AZ | — | ◇ UNVERIFIED |
| JTJohn Todd | Lakewood | CO | — | ◇ UNVERIFIED |
| JAJoliet Arsenal Portable Plant | Elwood | IL | — | ◇ UNVERIFIED |
| JAJones and Son INC | Lawrenceville | IL | — | ◇ UNVERIFIED |
| JSJoplin Stoneworks LLC | Duenweg | MO | — | ◇ UNVERIFIED |
| JLJoseph L Pohl Contractor | Nevada | MO | — | ◇ UNVERIFIED |
| JMJoseph Mining CO | Mcdowell | KY | — | ◇ UNVERIFIED |
| JGJtl Group INC. | Belgrade | MT | — | ◇ UNVERIFIED |
| JRJtl-knife River- Portable Lo-pro 250 Cbp | Cheyenne | WY | — | ◇ UNVERIFIED |
| JCJuan Carlos Gonzalez | Byron | CA | — | ◇ UNVERIFIED |
| JHJuan Hernandez Dba Juan Hernandez | Raliegh | NC | — | ◇ UNVERIFIED |
| JWJ. W. Kelso Company, INC. | Galveston | TX | — | ◇ UNVERIFIED |
| KEKalmar Enterprises Iv, LLC | Jefferson | LA | — | ◇ UNVERIFIED |
| KRKansas Ready-mix | Park City | KS | — | ◇ UNVERIFIED |
| KQKapa'a Quarry, Ready-mix Batch Plant | Kailua | HI | — | ◇ UNVERIFIED |
| KCKasten Concrete Products | Cape Girardeau | MO | — | ◇ UNVERIFIED |
| KMKast Marble | Colorado Springs | CO | — | ◇ UNVERIFIED |
| KCKay Concrete Materials -monett | Monett | MO | — | ◇ UNVERIFIED |
| KCKay Concrete Materials-mt. Vernon | Mount Vernon | MO | — | ◇ UNVERIFIED |
| KRKaysville Ready Mix Concrete | Kaysville | UT | — | ◇ UNVERIFIED |
| KRKelley Ready Mix LLC | Batavia | OH | — | ◇ UNVERIFIED |
| KRKelley Ready Mix LLC | Batavia | OH | — | ◇ UNVERIFIED |
| KCKelly's Concrete & Building Materials INC | Fremont | CA | — | ◇ UNVERIFIED |
| KIKellystone, INC. | Lake Charles | LA | — | ◇ UNVERIFIED |
| KCKendall County Concrete Crushing INC | Bristol | IL | — | ◇ UNVERIFIED |
| KCKendall County Concrete INC | Aurora | IL | — | ◇ UNVERIFIED |
| KBKennendale Batch Plant | Mansfield | TX | — | ◇ UNVERIFIED |
| KCKentucky Concrete INC | Glendale | KY | — | ◇ UNVERIFIED |
| KCKentucky Concrete INC E-town # 1 | Elizabethtown | KY | — | ◇ UNVERIFIED |
| KCKentucky Concrete INC - Plant 2 & 6 | Radcliff | KY | — | ◇ UNVERIFIED |
| KCKentucky Concrete INC - Plant 4 | Cecilia | KY | — | ◇ UNVERIFIED |
| KCKentucky Concrete INC - Shelby CO Concrete INC | Shelbyville | KY | — | ◇ UNVERIFIED |
| KOKenway-concrete of Kentucky LLC | Brownsville (edmonson) | KY | — | ◇ UNVERIFIED |
| KCKenway Concrete of Ky LLC | Glasgow | KY | — | ◇ UNVERIFIED |
| KRKern's Ready Mixed Concrete, INC. | Stillwater | OK | — | ◇ 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 Hickory Ready-mixed Concrete Company, INC. | Hickory | NC | — | ◇ UNVERIFIED |
| KHKerr's Hrm Concrete Co., INC. - Morganton / Industrial Blvd. | Morganton | NC | — | ◇ UNVERIFIED |
| KRKerr's Redi Mix INC | Centre | AL | — | ◇ UNVERIFIED |
| KCKey Concrete Industries | Pinellas Park | FL | — | ◇ UNVERIFIED |
| KLKey Largo Facility | Key Largo | FL | — | ◇ UNVERIFIED |
| KCKeys Concrete Industries, Rm2 | Spring Hill | FL | — | ◇ UNVERIFIED |
| KCKeystone Concrete Block and Supply Company, INC. | Scranton | PA | — | ◇ UNVERIFIED |
| KCKeystone Concrete Block INC. | Clarks Summit | PA | — | ◇ UNVERIFIED |
| KCK-five Construction CO | Lemont | IL | — | ◇ UNVERIFIED |
| KCK-five Construction INC | North Aurora | IL | — | ◇ UNVERIFIED |
| KGK & G Ready Mix INC | Stanton | CA | — | ◇ UNVERIFIED |
| K4Kienstra 44 Llc-rolla | Rolla | MO | — | ◇ UNVERIFIED |
| KBKienstra Block & Brick LLC | Wood River | IL | — | ◇ UNVERIFIED |
| KLKienstra-illinois LLC | Granite City | IL | — | ◇ UNVERIFIED |
| KLKienstra-illinois LLC | Edwardsville | IL | — | ◇ UNVERIFIED |
| KLKienstra-illinois LLC | Alton | IL | — | ◇ UNVERIFIED |
| KLKienstra-illinois LLC | Pontoon Beach | IL | — | ◇ UNVERIFIED |
| KIKienstra INC | Alton | IL | — | ◇ UNVERIFIED |
| KMKienstra Materials Company | Overland | MO | — | ◇ UNVERIFIED |
| KRKienstra Ready Mix | Florissant | MO | — | ◇ UNVERIFIED |
| KRKienstra Ready Mix | O Fallon | MO | — | ◇ UNVERIFIED |
| KWKiewit Western CO | Loveland Area | CO | — | ◇ UNVERIFIED |
| KDKilgore Dba Peak Mat - Hagen Port Rmc Ba | Silverthorne | CO | — | ◇ UNVERIFIED |
| KRKilleen Ready Mix | Killeen | TX | — | ◇ UNVERIFIED |
| KRKilleen Ready Mix LTD. | Killeen | TX | — | ◇ UNVERIFIED |
| KSKilleen South Ready Mix | Killeen | TX | — | ◇ UNVERIFIED |
| KBKimball Batch Plant | Kimball | NE | — | ◇ UNVERIFIED |
| KRKincaid Ready Mix | Olathe | KS | — | ◇ UNVERIFIED |
| KCKing Concrete LLC | Thornton | CO | — | ◇ UNVERIFIED |
| KGKing General Contractors INC | Bristol | VA | — | ◇ UNVERIFIED |
| KRKings Ready Mix INC | Brooklyn | NY | — | ◇ UNVERIFIED |
| KRKings Ready Mix INC. | Brooklyn | NY | — | ◇ UNVERIFIED |
| KRKingsway Ready Mix, INC. | Hendersonville | NC | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete - Crossville Plant | Crossville | AL | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete INC | Birmingham | AL | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete INC | Birmingham | AL | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete,inc. Plant 13 | Birmingham | AL | — | ◇ UNVERIFIED |
| KCKirkpatrick Concrete, INC. - Stevenson Plant | Stevenson | AL | — | ◇ UNVERIFIED |
| KKirkpatrick (oneonta) | Oneonta | AL | — | ◇ UNVERIFIED |
| KRKirksville Ready Mix North | Kirksville | MO | — | ◇ UNVERIFIED |
| KBKlueter Bros Concrete Products | Edwardsville | IL | — | ◇ UNVERIFIED |
| KRKnife River Corporation | Saint Cloud | MN | — | ◇ UNVERIFIED |
| KRKnife River Corporation | Bismarck | ND | — | ◇ UNVERIFIED |
| KRKnife River Corporation - Mountain West - Cascade | Cascade | ID | — | ◇ UNVERIFIED |
| KRKnife River Corporation - North Central | Brainerd | MN | — | ◇ UNVERIFIED |
| KRKnife River Corporation - Northwest | Molalla | OR | — | ◇ UNVERIFIED |
| KRKnife River Corporation - Northwest | Woodburn | OR | — | ◇ UNVERIFIED |
| KRKnife River Corporation - Northwest | Gervais | OR | — | ◇ UNVERIFIED |
| KRKnife River Dba Concrete INC | Lincoln | CA | — | ◇ UNVERIFIED |
| KRKnife River Hutchinson Ready Mix | Hutchinson | MN | — | ◇ UNVERIFIED |
| KRKnife River Little Falls North Ready Mix | Little Falls | MN | — | ◇ UNVERIFIED |
| KRKnife River Midwest LLC Q135 | Portable Concrete Batch Plant | NE | — | ◇ UNVERIFIED |
| KRKnife River Milaca Ready Mix | Milaca | MN | — | ◇ UNVERIFIED |
| KRKnife River North Central Watford City | Watford City | ND | — | ◇ UNVERIFIED |
| KRKnife River Stayton Sand and Gravel | Stayton | OR | — | ◇ UNVERIFIED |
| KRKnight Redi-mix INC. | Ellabell | GA | — | ◇ UNVERIFIED |
| KCKnight's Companies - Knights Redi-mix Plant 15 | Summerville | SC | — | ◇ UNVERIFIED |
| KIKoncrete Industries Coneco Portable | Walla Walla | WA | — | ◇ UNVERIFIED |
| KIKoncrete Industries INC | Walla Walla | WA | — | ◇ UNVERIFIED |
| KRKoski Ready Mix Sand & Gravel & Oil CO | Esko | MN | — | ◇ UNVERIFIED |
