| LCLexington Concrete and Block Company Inc, Lexington Plant | Lexington | MS | — | ◐ LIKELY ACTIVE |
| LCLexington Concrete and Block Company Inc, Pearl Plant | Pearl | MS | — | ◐ LIKELY ACTIVE |
| LRLincoln Ready Mix Concrete | Lincoln | DE | — | ◐ LIKELY ACTIVE |
| LPLongleaf Packaging | Holly Hill | SC | — | ◐ LIKELY ACTIVE |
| LRLoveland Ready Mix | Loveland | CO | — | ◐ LIKELY ACTIVE |
| LSLuck Stone | Burkeville | VA | — | ◐ LIKELY ACTIVE |
| LSLuck Stone - South Richmond Plant | Richmond | VA | — | ◐ LIKELY ACTIVE |
| MCMagnolia Cbp | Magnolia | TX | — | ◐ LIKELY ACTIVE |
| MRMainline Ready Mix | Fort Myers | FL | — | ◐ LIKELY ACTIVE |
| MIManatts INC | Ankeny | IA | — | ◐ LIKELY ACTIVE |
| MCMarshall Concrete | Christiansburg | VA | — | ◐ LIKELY ACTIVE |
| MCMaschmeyer Concrete - Okeechobee Plant | Okeechobee | FL | — | ◐ LIKELY ACTIVE |
| MPMetro Products & Const-robeson | Lumberton | NC | — | ◐ LIKELY ACTIVE |
| MRMetro Ready Mix | Prince George | VA | — | ◐ LIKELY ACTIVE |
| MCMeuth Concrete - Cadiz Plant | Cadiz | KY | — | ◐ LIKELY ACTIVE |
| MCMeuth Construction Supply | Madisonville | KY | — | ◐ LIKELY ACTIVE |
| MMMeyer Material | Mchenry | IL | — | ◐ LIKELY ACTIVE |
| MBMichels Batch Plant - Berthold | Berthold | ND | — | ◐ LIKELY ACTIVE |
| MBMidwest Block & Brick-kansas City Plant | Kansas City | MO | — | ◐ LIKELY ACTIVE |
| MCMidwest Concrete Materials - Lawrence (e 23rd)(air) | Lawrence | KS | — | ◐ LIKELY ACTIVE |
| MCMidwest Concrete Materials - Plant #36 (air) | Ottawa | KS | — | ◐ LIKELY ACTIVE |
| MPMidwest Products - Hanover Plant | Hanover | KS | — | ◐ LIKELY ACTIVE |
| MPMidwest Products - Washington Plant | Washington | KS | — | ◐ LIKELY ACTIVE |
| MCMilestone Contractors, L.p. | New Haven | IN | — | ◐ LIKELY ACTIVE |
| MRMintek Resources Incorporated | Indianapolis | IN | — | ◐ LIKELY ACTIVE |
| MRMission Ready Mix - Goleta | Goleta | CA | — | ◐ LIKELY ACTIVE |
| MMMmc Materials Inc, Amory | Amory | MS | — | ◐ LIKELY ACTIVE |
| MMMmc Materials Inc, Greenwood | Greenwood | MS | — | ◐ LIKELY ACTIVE |
| MMMmc Materials Inc, Indianola | Indianola | MS | — | ◐ LIKELY ACTIVE |
| MMMmc Materials, INC. - Memphis (old US 78 Plant) | Memphis | TN | — | ◐ LIKELY ACTIVE |
| MMMmc Materials, INC. Oakland | Oakland | TN | — | ◐ LIKELY ACTIVE |
| MMMmc Materials Inc, Wiggins | Wiggins | MS | — | ◐ LIKELY ACTIVE |
| MMMmc Materials Inc, Winona | Winona | MS | — | ◐ LIKELY ACTIVE |
| MPMonarch Products Company INC - Strinestown | York | PA | — | ◐ LIKELY ACTIVE |
| MCMountain Cement CO | Denver | CO | — | ◐ LIKELY ACTIVE |
| MPMountain Park Concrete INC | Granby | CO | — | ◐ LIKELY ACTIVE |
| MHMt Holly Concrete CO | Mount Holly | NJ | — | ◐ LIKELY ACTIVE |
| MMMt. Meigs Plant | Mount Meigs | AL | — | ◐ LIKELY ACTIVE |
| NRNashville Ready Mix | Mount Juliet | TN | — | ◐ LIKELY ACTIVE |
| NRNashville Ready Mix Franklin Plant | Franklin | TN | — | ◐ LIKELY ACTIVE |
| NRNashville Ready Mix INC. | Clarksville | TN | — | ◐ LIKELY ACTIVE |
| NRNashville Ready Mix Shop | Nashville | TN | — | ◐ LIKELY ACTIVE |
| NCNew Canton Concrete | — | VA | — | ◐ LIKELY ACTIVE |
| NPNewport Paving Company, INC. - Asphalt Plant 4 & Charles Blalock & Sons, INC. Db | Newport | TN | — | ◐ LIKELY ACTIVE |
| NBNiederwald Batch Plant 1 | Niederwald | TX | — | ◐ LIKELY ACTIVE |
| NANorthwest Aggregates Snoqualmie | Snoqualmie | WA | — | ◐ LIKELY ACTIVE |
| NRNorthwest Ready-mix | Ocheyedan | IA | — | ◐ LIKELY ACTIVE |
| NANov Ameron | Anniston | AL | — | ◐ LIKELY ACTIVE |
| OAOkeechobee Asphalt/concrete Plant, Cw Roberts Contracting INC. | Okeechobee | FL | — | ◐ LIKELY ACTIVE |
| OAOldcastle Apg South, INC. | Auburndale | FL | — | ◐ LIKELY ACTIVE |
| OPOldcastle Precast | Ogden | UT | — | ◐ LIKELY ACTIVE |
| OSOldcastle Sw Group Dba Telluride Gravel | Telluride | CO | — | ◐ LIKELY ACTIVE |
| OSOldcastle Sw Group INC Dba Four Corners | Pagosa Springs | CO | — | ◐ LIKELY ACTIVE |
| OSOldcastle Sw Group INC Dba United CO of | Paonia | CO | — | ◐ LIKELY ACTIVE |
| OROrgain Ready Mix Concrete Co., INC. | Clarksville | TN | — | ◐ LIKELY ACTIVE |
| OMOutback Materials | Friant | CA | — | ◐ LIKELY ACTIVE |
| OIOuzts-wilbert INC | Florence | SC | — | ◐ LIKELY ACTIVE |
| ODOxford Division of B and B Concrete Company INC | Oxford | MS | — | ◐ LIKELY ACTIVE |
| OBOzinga Brothers, INC. | New Buffalo | MI | — | ◐ LIKELY ACTIVE |
| PMPaw Materials, INC | Land O Lakes | FL | — | ◐ LIKELY ACTIVE |
| PJPenn Jersey Building Materials-pleasantville Plant (form:eastern Transit Mix) | Egg Harbor | NJ | — | ◐ LIKELY ACTIVE |
| PRPensacola Ready Mix USA | Gulf Breeze | FL | — | ◐ LIKELY ACTIVE |
| PRPhoenix Recycling | Ashland | VA | — | ◐ LIKELY ACTIVE |
| PBPine Belt Ready Mix, Glendale Avenue Plant | Hattiesburg | MS | — | ◐ LIKELY ACTIVE |
| PRPolitte Ready Mix-arcadia | Arcadia | MO | — | ◐ LIKELY ACTIVE |
| PRPowhatan Ready Mix - Flat Rock | Powhatan | VA | — | ◐ LIKELY ACTIVE |
| PMPreferred Materials Ab Ready Mix - Daytona Cbp | Daytona Beach | FL | — | ◐ LIKELY ACTIVE |
| PMPreferred Materials Cbp-kissimmee | Kissimmee | FL | — | ◐ LIKELY ACTIVE |
| PMPreferred Materials - Fmm Blvd Facility | Jacksonville | FL | — | ◐ LIKELY ACTIVE |
| PMPreferred Materials - Spring Hill Facility | Spring Hill | FL | — | ◐ LIKELY ACTIVE |
| PIPro-mix INC. / Structural Prestressed Industries | Medley | FL | — | ◐ LIKELY ACTIVE |
| PIPump-crete Inc-winter Haven Facility | Winter Haven | FL | — | ◐ LIKELY ACTIVE |
| QRQuality Ready Mix Jurica Plant | Corpus Christi | TX | — | ◐ LIKELY ACTIVE |
| QRQuickcrete Ready Mix Plant | Medley | FL | — | ◐ LIKELY ACTIVE |
| QBQuikrete Birmingham, INC. | Birmingham | AL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials Llc-daytona Cbp | Daytona Beach | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - Holder Batch Plant | Hernando | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - Hudson Plant | Hudson | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - Lake Wales Facility | Lake Wales | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - Largo Facility | Largo | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC ? Palatka Cbp | Palatka | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, LLC - Poinciana Ready Mix | Poinciana | FL | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials LLC - Quikrete Ready Mix - Belle Chasse Plant | Belle Chasse | LA | — | ◐ LIKELY ACTIVE |
| QCQuikrete Construction Materials, Llc- St. Augustine Ready Mi | Saint Augustine | FL | — | ◐ LIKELY ACTIVE |
| QMQuikrete - Martinsville | Martinsville | VA | — | ◐ LIKELY ACTIVE |
| RSRbc Sand & Gravel INC. | Darby | MT | — | ◐ LIKELY ACTIVE |
| RMReady Mix Concrete, INC. | Sainte Genevieve, Township of | MO | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete CO | Lincoln | NE | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Company | Kinston | NC | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Company Garner Number 5 | Garner | NC | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Company, Plant #9, Louisburg | Louisburg | NC | — | ◐ LIKELY ACTIVE |
| RMReady Mixed Concrete Company Wilson | Sims | NC | — | ◐ LIKELY ACTIVE |
| RMReady Mix Solutions LLC | Murphysboro | IL | — | ◐ LIKELY ACTIVE |
| RSReady-mix Solutions LLC | Carbondale | IL | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA - Alexander City Facility | Alexander City | AL | — | ◐ LIKELY ACTIVE |
| RMReady Mix Usa, LLC - Andalusia Facility | Andalusia | AL | — | ◐ LIKELY ACTIVE |
| RMReady Mix Usa, LLC - Monroeville Facility | Monroeville | AL | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA - New Tazewell | New Tazewell | TN | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA - Niceville Plant (west) | Niceville | FL | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA - Opelika Facility | Opelika | AL | — | ◐ LIKELY ACTIVE |