| MMMartin Marietta Chambers Ready Mix | Aurora | CO | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete Company INC | Lake Park | FL | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete - Fort Pierce Plant | Fort Pierce | FL | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete - Stuart Plant | Stuart | FL | — | ◇ UNVERIFIED |
| MLMassarelli's Lawn Ornaments, INC. | Hammonton | NJ | — | ◇ UNVERIFIED |
| MSMccabe Sand & Gravel | Taunton | MA | — | ◇ UNVERIFIED |
| MCMetro Concrete | Ocean Springs | MS | — | ◇ UNVERIFIED |
| MMMetro Materials INC Cordova | Cordova | TN | — | ◇ UNVERIFIED |
| MMMetromont Materials Corporation - Hamlet Plant | Hamlet | NC | — | ◇ UNVERIFIED |
| MPMetromont Paris Mountain | Greenville | SC | — | ◇ UNVERIFIED |
 Michigan Paving and Materials - Spartan Asphalt | Lansing | MI | — | ◇ UNVERIFIED |
| MPMichigan Paving & Materials CO. | Monroe | MI | — | ◇ UNVERIFIED |
| MPMichigan Paving & Materials CO. Kalamazoo Asphalt | Kalamazoo | MI | — | ◇ UNVERIFIED |
| MCMid Continent Concrete CO / 431 W 23rd St Tulsa Facility | Tulsa | OK | — | ◇ UNVERIFIED |
| MAMidland Asphalt Materials | Clearfield | PA | — | ◇ UNVERIFIED |
| MAMidland Asphalt Materials INC | Tonawanda | NY | — | ◇ UNVERIFIED |
| MBMidtown Batch Plant | Oklahoma City | OK | — | ◇ UNVERIFIED |
| MPMidwest Precast Concrete Enterprises INC | Mount Pleasant | IA | — | ◇ UNVERIFIED |
| MPMidwest Premix - Jefferson City | Jefferson City | MO | — | ◇ UNVERIFIED |
| MCMilestone Contractors, L.p. | Indianapolis | IN | — | ◇ UNVERIFIED |
| MVMission Valley Rock CO | Sunol | CA | — | ◇ UNVERIFIED |
 Mmc Materials INC | Hattiesburg | MS | — | ◇ UNVERIFIED |
| Mmc Materials INC | Coldwater | MS | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Ellisville | Ellisville | MS | — | ◇ UNVERIFIED |
| Mmc Materials, INC. - Rossville Plant | Rossville | TN | — | ◇ UNVERIFIED |
| Mmc Materials, INC - South Parkway Plant | Memphis | TN | — | ◇ UNVERIFIED |
| Mmc Materials Inc, Starkville 30854 | Starkville | MS | — | ◇ UNVERIFIED |
| MBMoore Batch Plant | Moore | OK | — | ◇ UNVERIFIED |
| MCMorgan Concrete CO. - Lavonia | Lavonia | GA | — | ◇ UNVERIFIED |
| MCMorgan Concrete Company | Westminster | SC | — | ◇ UNVERIFIED |
| MCMorgan Concrete CO. - Rabun Gap | Rabun Gap | GA | — | ◇ UNVERIFIED |
| MCMorgan Concrete - Demorest Plant | Demorest | GA | — | ◇ UNVERIFIED |
| MPMykawa Plant | Houston | TX | — | ◇ UNVERIFIED |
| NRNational Ready Mix Concrete | Moorpark | CA | — | ◇ UNVERIFIED |
| NRNational Ready Mix Concrete CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| NRNational Ready Mix Concrete CO . | Sun Valley | CA | — | ◇ UNVERIFIED |
| NRNevada Ready Mix | Las Vegas | NV | — | ◇ UNVERIFIED |
| NENew England Concrete Products | Amesbury | MA | — | ◇ UNVERIFIED |
| NCNewington Concrete Corporation - Gainesville Plant | Gainesville | VA | — | ◇ UNVERIFIED |
| NNNew Ngc INC. D/b/a National Gypsum Compa | Clinton | IN | — | ◇ UNVERIFIED |
| NANorris Asphalt Paving Co-breit Quarry Plant | Savannah | MO | — | ◇ UNVERIFIED |
| NPNortheast Paving Bridgeville Plt | Bridgeville | PA | — | ◇ UNVERIFIED |
| NENorthern Elastomeric | Brentwood | NH | — | ◇ UNVERIFIED |
| NNorthfield-indianapolis | Indianapolis | IN | — | ◇ UNVERIFIED |
| OIO&g Industries Southbury Quarry | Southbury | CT | — | ◇ UNVERIFIED |
| OAOldcastle Apg South | Pompano Beach | FL | — | ◇ UNVERIFIED |
| OAOldcastle Apg South, INC | Pensacola | FL | — | ◇ UNVERIFIED |
| OCOld Castle Infrastructure | Fuquay Varina | NC | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Topeka | KS | — | ◇ UNVERIFIED |
 Oldcastle Infrastructure INC. | Fredericksburg | VA | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | North Fort Myers | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC - Concord | Concord | NC | — | ◇ UNVERIFIED |
| OPOldcastle Precast Telco | Newnan | GA | — | ◇ UNVERIFIED |
| OROldcastle Retail INC | Oxford | MA | — | ◇ UNVERIFIED |
| OROldcastle Retail INC (dba Bonsal American) | Canaan | CT | — | ◇ UNVERIFIED |
| OBOmg Building Products LLC | Rockford | MN | — | ◇ UNVERIFIED |
| OCOwatonna Construction CO - Masonry | Medford | MN | — | ◇ UNVERIFIED |
| OCOwens Corning Roofing and Asphalt LLC / 3400 Ne 4th St Asphalt Plant | Oklahoma City | OK | — | ◇ UNVERIFIED |
| OSOxford Sand Company Inc, Oxford Plant | Oxford | MS | — | ◇ UNVERIFIED |
| OBOzinga Brothers Ready Mix Concrete | Crown Point | IN | — | ◇ UNVERIFIED |
| OCOzinga Chicago Rmc INC | Chicago | IL | — | ◇ UNVERIFIED |
| OCOzinga Concrete Products | Sycamore | IL | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Alsip | IL | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Plainfield | IL | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Lemont | IL | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Montgomery | IL | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Joliet | IL | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Company | Chicago | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Chinatown | Chicago | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete Desplaines Yard | Des Plaines | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Evanston Yard | Evanston | IL | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Concrete INC | Lake Bluff | IL | — | ◇ UNVERIFIED |
| PAParamount-nevada Asphalt CO LLC | Fernley | NV | — | ◇ UNVERIFIED |
| PAPeak Asphalt LLC - Rawlins Plant | Rawlins | WY | — | ◇ UNVERIFIED |
| PSPeak Silverthorne Batch Plant | Silverthorne | CO | — | ◇ UNVERIFIED |
| PSPennsy Supply INC Penn Twp Facility | Newville | PA | — | ◇ UNVERIFIED |
| PCPenny's Concrete, INC. | Kansas City | MO | — | ◇ UNVERIFIED |
| PCPenny's Concrete - Martin City | Kansas City | MO | — | ◇ UNVERIFIED |
| PPPetroleum Products Supply, LLC | Guaynabo | PR | — | ◇ UNVERIFIED |
| PBPiedmont Batch Plant | Piedmont | OK | — | ◇ UNVERIFIED |
| PBPike Baltimore Terminals LLC - Baltimore Terminal | Baltimore | MD | — | ◇ UNVERIFIED |
| PIPike Industries | Lebanon | NH | — | ◇ UNVERIFIED |
| PIPike Industries INC | New Haven | VT | — | ◇ UNVERIFIED |
| PIPike Industries, INC. | Westbrook | ME | — | ◇ UNVERIFIED |
| PIPike Industries INC - Washington | Washington | ME | — | ◇ UNVERIFIED |
| PIPike Industries INC - Wells | Wells | ME | — | ◇ UNVERIFIED |
| PIPike Industries - Poland Crushed Stone | Poland | ME | — | ◇ UNVERIFIED |
| PIPike Industries Waterford Sand & Gravel | Waterford | VT | — | ◇ UNVERIFIED |
| PCPioneer Concrete of Texas INC | Round Rock | TX | — | ◇ UNVERIFIED |
| PAPoe Asphalt Paving | Lewiston | ID | — | ◇ UNVERIFIED |
| PAPoe Asphalt Paving | Pullman | WA | — | ◇ UNVERIFIED |
| PAPoe Asphalt Paving 00057 | Post Falls | ID | — | ◇ UNVERIFIED |
| PPolyglass | Fernley | NV | — | ◇ UNVERIFIED |
| PUPolyglass Usa, INC. | Winter Haven | FL | — | ◇ UNVERIFIED |
| PIPotters Industries INC | Potsdam | NY | — | ◇ UNVERIFIED |
| PIPotters Industries INC. | Carlstadt | NJ | — | ◇ UNVERIFIED |
| PIPotters Industries - Thomasville | Thomasville | NC | — | ◇ UNVERIFIED |
| PMPrairie Material Sales INC | Northbrook | IL | — | ◇ UNVERIFIED |
| PPPrecision Packaging | Fort Smith | AR | — | ◇ UNVERIFIED |
| PCPreferred Concrete CORP | Freetown | MA | — | ◇ UNVERIFIED |
