| KCKe&g Construction Hot Plant | Sierra Vista | AZ | — | ◐ LIKELY ACTIVE |
| KSKeith & Sons, INC. (harry)-hetherington | Portable | KS | — | ◐ LIKELY ACTIVE |
| KCKeller Construction Company | Saint Joseph | MO | — | ◐ LIKELY ACTIVE |
| KCKelly's Concrete & Building Materials INC | Fremont | CA | — | ◐ LIKELY ACTIVE |
| KSKemp Stone INC. | Neosho | MO | — | ◐ LIKELY ACTIVE |
| KCKentucky Concrete INC - Shelby CO Concrete INC | Shelbyville | KY | — | ◐ LIKELY ACTIVE |
| KCKenway Contracting INC | Bowling Green | KY | — | ◐ LIKELY ACTIVE |
| KRKern's Ready Mixed Concrete, INC. | Stillwater | OK | — | ◐ LIKELY ACTIVE |
| KRKerr's Redi Mix INC | Centre | AL | — | ◐ LIKELY ACTIVE |
| KHK-five Hodgkins LLC | Hodgkins | IL | — | ◐ LIKELY ACTIVE |
| KCKienstra Concrete (missouri Bottom Rd) | Bridgeton | MO | — | ◐ LIKELY ACTIVE |
| KAKing Asphalt # 3 New Plant | Simpsonville | SC | — | ◐ LIKELY ACTIVE |
| KAKing Asphalt INC | Pacolet | SC | — | ◐ LIKELY ACTIVE |
| KBKing Blacktop LLC | Byron | IL | — | ◐ LIKELY ACTIVE |
| KPKings Park Asphalt CORP | Kings Park | NY | — | ◐ LIKELY ACTIVE |
| KRKnight's Redi-mix (jedburg Facility) | Summerville | SC | — | ◐ LIKELY ACTIVE |
| KMKokosing Materials, INC | Upper Sandusky | OH | — | ◐ LIKELY ACTIVE |
| KMKokosing Materials INC 510 | London | OH | — | ◐ LIKELY ACTIVE |
| KMKokosing Materials INC. - Plant #501 (0370010049) | Mansfield | OH | — | ◐ LIKELY ACTIVE |
| KMKokosing Materials INC - Plant 526 (0159000422) | Marengo | OH | — | ◐ LIKELY ACTIVE |
| KMKokosing Materials INC Plant No 517 (0285030277) | Wooster | OH | — | ◐ LIKELY ACTIVE |
| KCKoss Construction Company - Koss Construction Company Plant #246 | Hazen | AR | — | ◐ LIKELY ACTIVE |
| KCKuhlman Concrete, LLC | Fort Myers | FL | — | ◐ LIKELY ACTIVE |
| LPLafarge Powers Ready Mix | Carbondale | CO | — | ◐ LIKELY ACTIVE |
| LWLafarge West, INC. | Fort Collins Area | CO | — | ◐ LIKELY ACTIVE |
| LILakeside Industries Longview | Longview | WA | — | ◐ LIKELY ACTIVE |
| LCLane Construction | Hampden | ME | — | ◐ LIKELY ACTIVE |
| LCLane Construction CORP | Presque Isle | ME | — | ◐ LIKELY ACTIVE |
| LCLane Construction Corporation | Belfast | ME | — | ◐ LIKELY ACTIVE |
| LCLane Const Springdale Plt | Springdale | PA | — | ◐ LIKELY ACTIVE |
| LSLan Se, LLC Dba Gate Precast Company | Ashland City | TN | — | ◐ LIKELY ACTIVE |
| LPLash Paving, INC. | Martins Ferry | OH | — | ◐ LIKELY ACTIVE |
| LMLaurel Macadam Llc/springhill Asphalt Plt | Lake Lynn | PA | — | ◐ LIKELY ACTIVE |
| LALeavenworth Asphalt Materials (asphalt Plant)(portable)(air) | Leavenworth | KS | — | ◐ LIKELY ACTIVE |
| LBLee Building Products | Murfreesboro | TN | — | ◐ LIKELY ACTIVE |
| LHLee Hy Construction Rockville Plant 5 | Rockville | VA | — | ◐ LIKELY ACTIVE |
| LALeeward Asphalt/palmyra Twp | Hawley | PA | — | ◐ LIKELY ACTIVE |
| LALehigh Asphalt Paving/andreas Plt | Andreas | PA | — | ◐ LIKELY ACTIVE |
| LRLehman Roberts | Memphis | TN | — | ◐ LIKELY ACTIVE |
Leo O'laughlin Inc-leo O'laughlin INC | Shelbina | MO | — | ◐ LIKELY ACTIVE |
| LCLexington Concrete and Block Company, INC. | Mendenhall | MS | — | ◐ LIKELY ACTIVE |
| LCLexington Concrete and Block Company Inc, Lexington Plant | Lexington | MS | — | ◐ LIKELY ACTIVE |
| LCLexington Concrete and Block Company Inc, Pearl Plant | Pearl | MS | — | ◐ LIKELY ACTIVE |
| LEL.g. Everist, INC. - East Sioux Quarry | Sioux Falls | SD | — | ◐ LIKELY ACTIVE |
| LRLincoln Ready Mix Concrete | Lincoln | DE | — | ◐ LIKELY ACTIVE |
| LPLindy Paving Inc/sterrettania Asphalt Plt | Fairview | PA | — | ◐ LIKELY ACTIVE |
| LPLl Pelling - J St Plant | Cedar Rapids | IA | — | ◐ LIKELY ACTIVE |
| LPLongleaf Packaging | Holly Hill | SC | — | ◐ LIKELY ACTIVE |
| LRLoveland Ready Mix | Loveland | CO | — | ◐ LIKELY ACTIVE |
| LSLuck Stone | Burkeville | VA | — | ◐ LIKELY ACTIVE |