| NCNorthland Constructors of Duluth LLC - Metallic | Duluth | MN | — | ◇ UNVERIFIED |
| NANorthstar Asphalt INC. (1576171157) | North Canton | OH | — | ◇ UNVERIFIED |
| NMNorthstar Materials INC Dba Knife River Materials | Bemidji | MN | — | ◇ UNVERIFIED |
| NANorthstate Asphalt | Redding | CA | — | ◇ UNVERIFIED |
| NGNorthwest Georgia Paving | Calhoun | GA | — | ◇ UNVERIFIED |
| NFNorwood Facility | Norfolk | NY | — | ◇ UNVERIFIED |
| NINupac, INC - a Division of Helena Sand & Gravel | Kalispell | MT | — | ◇ UNVERIFIED |
| OCO Cross Paving/erie | Wattsburg | PA | — | ◇ UNVERIFIED |
| OTO'daniel Trucking CO | Carmi | IL | — | ◇ UNVERIFIED |
| OSOdonnell & Sons Const. (asphalt Plant) (portable) | Portable | KS | — | ◇ UNVERIFIED |
| OAOgden Avenue Materials INC | Chicago | IL | — | ◇ UNVERIFIED |
| OGO & G Industries, INC | New Milford | CT | — | ◇ UNVERIFIED |
| OCO'hare Concrete Plant | Chicago | IL | — | ◇ UNVERIFIED |
| OSOil Spill (blacklidge Emulsions,, Inc.) | Gulfport | MS | — | ◇ UNVERIFIED |
| OAOlathe Aggregate Facilities (stormwater) | Olathe | KS | — | ◇ UNVERIFIED |
| OAOldcastle Apg Northeast, INC. | Manheim | PA | — | ◇ UNVERIFIED |
| OROldcastle Retail, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group - Cugnini Pit | Durango | CO | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group Dba B&b Excavating | Eagle | CO | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group Dba Four Conrners | Durango 2.5 Mi Se of | CO | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group Dba United Companies | Norwood | CO | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group Dba United CO of Mesa | Rifle | CO | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group Dba United CO of Mesa | Montrose | CO | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group- Tri County Pit | Hotchkiss | CO | — | ◇ UNVERIFIED |
| OSOldcastle Sw Group - Wattenberg West | Brighton, 2.0 Mi Nw of | CO | — | ◇ UNVERIFIED |
| OCOmans Contracting INC | Hesperia | MI | — | ◇ UNVERIFIED |
| OMOmg Midwest Dba Cessford Construction CO | Burlington | IA | — | ◇ UNVERIFIED |
| OMOmg Midwest INC | Johnston | IA | — | ◇ UNVERIFIED |
| OEOmni Engineering Plant 02 | Omaha | NE | — | ◇ UNVERIFIED |
| OEOmni Engineering Plant 02 | Omaha | NE | — | ◇ UNVERIFIED |
| OROpen Road Asphalt CO LLC | Marshall | IL | — | ◇ UNVERIFIED |
| OROpen Road Asphalt CO. LLC - Fairmount | Fairmount | IL | — | ◇ UNVERIFIED |
| OROpen Road Asphalt Company LLC | Paxton | IL | — | ◇ UNVERIFIED |
| OCOrange Crush LLC | Wheeling | IL | — | ◇ UNVERIFIED |
| OCOrange Crush LLC | East Dundee | IL | — | ◇ UNVERIFIED |
| OCOrange Crush LLC | Skokie | IL | — | ◇ UNVERIFIED |
| OCOrange Crush LLC | Des Plaines | IL | — | ◇ UNVERIFIED |
| OOriskany | Oriskany | NY | — | ◇ UNVERIFIED |
| OPOrlando Paving Company | Orlando | FL | — | ◇ UNVERIFIED |
| OPOrlando Paving Company | Oviedo | FL | — | ◇ UNVERIFIED |
| OPOrlando Paving Company | Apopka | FL | — | ◇ UNVERIFIED |
| OPOrlando Paving Plant #11 | Orlando | FL | — | ◇ UNVERIFIED |
| OPOrlando Paving Plant #5 | Apopka | FL | — | ◇ UNVERIFIED |
| OMOverland Material and Manufacturing INC / Astec 2 | Durant | OK | — | ◇ UNVERIFIED |
| OMOverland Material and Manufacturing INC / Astec 4 | Ada | OK | — | ◇ UNVERIFIED |
| OMOverland Material and Manufacturing INC / Clinton | Clinton | OK | — | ◇ UNVERIFIED |
| OPOverstreet Paving CO | Spring Hill | FL | — | ◇ UNVERIFIED |
| OPOwen PC Construction 00433 | Portable | ID | — | ◇ UNVERIFIED |
| OFOwens-corning Fiberglas Tech | Summit | IL | — | ◇ UNVERIFIED |
| OAOxford Asphalt & Paving | Oxford | MA | — | ◇ UNVERIFIED |