| OAOldcastle Architectural West INC | Rosenberg | TX | — | ◇ UNVERIFIED |
| OAOldcastle Architectural West INC | Austin | TX | — | ◇ UNVERIFIED |
| OAOldcastle Architectural West INC | Dallas | TX | — | ◇ UNVERIFIED |
| OCOldcastle Coastal Concrete Products | Orlando | FL | — | ◇ UNVERIFIED |
| OCOldcastle Coastal Concrete Products | West Palm Beach | FL | — | ◇ UNVERIFIED |
| OCOldcastle Coastal, INC. | Zephyrhills | FL | — | ◇ UNVERIFIED |
| OCOld Castle Infrastructure | Fuquay Varina | NC | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Wilsonville | OR | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Topeka | KS | — | ◇ UNVERIFIED |
| OIOldcastle Infrastructure | Platteville | CO | — | ◇ UNVERIFIED |
 Oldcastle Infrastructure INC. | Fredericksburg | VA | — | ◇ UNVERIFIED |
| Oldcastle Infrastructure INC. - Courtland | Courtland | MN | — | ◇ UNVERIFIED |
| OMOldcastle Matt Stone Holdings Incorporated | Cowpens | SC | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Lakeside | CA | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Avon | CT | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Lebanon | TN | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Mansfield | TX | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Idaho Falls | ID | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Houston | TX | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Kalamazoo | MI | — | ◇ UNVERIFIED |
| OPOldcastle Precast Brookshire Plant | Brookshire | TX | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Littleton | CO | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Medley | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Middle Island | NY | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Orlando | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | North Fort Myers | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Chandler | AZ | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC. | Edgewood | MD | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. - Bellingham | Bellingham | WA | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC - Concord | Concord | NC | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. - Jacksonvillesp | Jacksonville | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast Incorported | Rehoboth | MA | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. - Tallahasseesp | Midway | FL | — | ◇ UNVERIFIED |
| OPOldcastle Precast San Antonio Plant | San Antonio | TX | — | ◇ UNVERIFIED |
| OPOldcastle Precast Telco | Newnan | GA | — | ◇ UNVERIFIED |
| OROldcastle Retail INC | Oxford | MA | — | ◇ UNVERIFIED |
| OROldcastle Retail, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| OROldcastle Retail INC (dba Bonsal American) | Canaan | CT | — | ◇ UNVERIFIED |
| OROldcastle Retail INC (dba Bonsal American) | Lilesville | NC | — | ◇ UNVERIFIED |
| OPOrchard Park Plant | Orchard Park | NY | — | ◇ UNVERIFIED |
| OOriskany | Oriskany | NY | — | ◇ UNVERIFIED |
| OPOrlando Paving Plant #11 | Orlando | FL | — | ◇ UNVERIFIED |
| OPOrlando Paving Plant #5 | Apopka | FL | — | ◇ UNVERIFIED |
| OCOwatonna Construction CO - Masonry | Medford | MN | — | ◇ UNVERIFIED |
| OCOwens-corning CORP | Summit | IL | — | ◇ UNVERIFIED |
| OCOwens Corning - Denver Roofing Plant | Denver Area | CO | — | ◇ UNVERIFIED |
| OFOwens-corning Fiberglass Trumbull * | Medina | OH | — | ◇ UNVERIFIED |
| OCOwens Corning Memphis Asphalt Plant | Memphis | TN | — | ◇ UNVERIFIED |
| OCOwens Corning - Minneapolis Plant | Minneapolis | MN | — | ◇ UNVERIFIED |
| OCOwens Corning Roofing and Asphalt LLC / 3400 Ne 4th St Asphalt Plant | Oklahoma City | OK | — | ◇ UNVERIFIED |
| OCOwens Corning - Trumbull Asphalt Plant | Denver Area | CO | — | ◇ UNVERIFIED |
| OSOxford Sand Company Inc, Oxford Plant | Oxford | MS | — | ◇ UNVERIFIED |
| OROzark Ready Mix Kc - Kansas City, Kansas | Kansas City | KS | — | ◇ UNVERIFIED |
| OROzark Ready Mix Kc - Kansas City, Missouri | Kansas City | MO | — | ◇ UNVERIFIED |
| OROzark Ready Mix Kc - Olathe, Kansas | Olathe | KS | — | ◇ UNVERIFIED |
| OROzark Ready Mix - Osage Beach | Osage Beach | MO | — | ◇ UNVERIFIED |
| OROzark Ready Mix - Show Me Ready Mix | Lake Lotawana | MO | — | ◇ UNVERIFIED |
| OBOzinga Bros Inc-mccook Plant | Mccook | IL | — | ◇ 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 | Lemont | IL | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Montgomery | IL | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Plainfield | IL | — | ◇ UNVERIFIED |
| OIOzinga Illinois Rmc INC | Joliet | IL | — | ◇ UNVERIFIED |
| OROzinga Ready Mix | Roscoe | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix-belvidere | Belvidere | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Carol Stream Plant | Carol Stream | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix-channahon | Channahon | IL | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Company | Chicago | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Bremen | Bremen | IN | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Chinatown | Chicago | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete Desplaines Yard | Des Plaines | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Elkhart E | Elkhart | IN | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Evanston Yard | Evanston | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Gary | Gary | IN | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Concrete INC | Marengo | IL | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Concrete INC | Lake Bluff | IL | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Concrete INC | South Elgin | IL | — | ◇ UNVERIFIED |
| OROzinga Ready Mix Concrete INC. - South Bend | South Bend | IN | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete -lisbon/sussex | Sussex | WI | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Mchenry | Mchenry | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Monee | Monee | IL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete - Oak Creek | Oak Creek | WI | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Concrete-wheatfield | Wheatfield | IN | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Davie | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix-deerfield Beach | Pompano Beach | FL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix-dekalb | Dekalb | IL | — | ◇ UNVERIFIED |
| OROzinga Ready Mix-golden Glades | Miami | FL | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Goshen | Goshen | IN | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Miami 17th St | Miami | FL | — | ◇ UNVERIFIED |
| OWOzinga Waveland | Franklin Park | IL | — | ◇ UNVERIFIED |
| PBPabco Building Products (f#4070) | Sacramento | CA | — | ◇ UNVERIFIED |
| PCPalestine Concrete Tile CO. L.p. | Palestine | TX | — | ◇ UNVERIFIED |
| PBPalmdale Batch Plant | Palmdale | CA | — | ◇ UNVERIFIED |
| PTPalomar Transit Mix CO | Escondido | CA | — | ◇ UNVERIFIED |
| PAParamount-nevada Asphalt CO LLC | Fernley | NV | — | ◇ UNVERIFIED |
| PRParamount Ready Mix Concrete Plant 23 | Paramount | CA | — | ◇ UNVERIFIED |
| PPavestone | Grapevine | TX | — | ◇ UNVERIFIED |
