One Williams Center | Tulsa | OK |
Oologah Power Plant | Oologah | OK |
Owens Corning | Tulsa | OK |
Owens Corning | Oklahoma City | OK |
Ozark | Tulsa | OK |
Ozark Pipe Line | Covington | OK |
Ozark Pipe Line | Holdenville | OK |
Ozark Pipe Line | Stroud | OK |
Panhandle Eastern Pipe Line | Guymon | OK |
Panhandle Eastern Pipe Line | Aledo | OK |
Peerless Boiler & Engineering | Oklahoma City | OK |
Peerless International | Oklahoma City | OK |
Perkins Oil | Seminole | OK |
Petrolite | Barnsdall | OK |
Petty-Badger | Drumright | OK |
Phillips 66 | Bartlesville | OK |
Phillips Petroleum | Lindsay | OK |
Phillips Petroleum | Okmulgee | OK |
Phillips Petroleum | Bartlesville | OK |
Pioneer Cotton Mill | Guthrie | OK |
Piping Engineering | Tulsa | OK |
Piping Engineering | Sand Springs | OK |
Pittsburgh Plate Glass | Henryetta | OK |
Power Plant | Oologah | OK |
Prairie Pipe Line | Mangum | OK |
Presbyterian Hospital | Oklahoma City | OK |
Psi Energy | Tulsa | OK |
Public Service Company | Oklahoma City | OK |
Public Service Company Of Oklahoma | Lawton | OK |
Public Service Company Of Oklahoma | Weleetka | OK |
Public Service Company Of Oklahoma | Hugo | OK |
Public Service Company Of Oklahoma | Oologah | OK |
Public Service Company Of Oklahoma | Anadarko | OK |
Public Service Company Of Oklahoma | Washita | OK |
Public Service Company Of Oklahoma | Jenks | OK |
Public Service Company Of Oklahoma | Carnegie | OK |
Public Service Company Of Oklahoma | Tulsa | OK |
Public Service Company Of Oklahoma | Sand Springs | OK |
Pure Oil | Muskogee | OK |
Refractory Construction | Tulsa | OK |
Rex Aluminum Plant | Oklahoma City | OK |
Right-Way Insulation & General Contracting | Wilburton | OK |
Robinson Steel Mill | Oklahoma City | OK |
Rock Island Refining | Duncan | OK |
Rockwell Manufacturing | Tulsa | OK |
Rodman Gas Plant | Drummond | OK |
Rogers Galvanizing | Tulsa | OK |
Rust Engineering | Valliant | OK |
Saint Anthony Hospital | Oklahoma City | OK |
Saint Clair Lime | Sallisaw | OK |