O OACX - Central Transportation, Inc. OAKX - Oak Ridge Waste & Recycling OAR - Old Augusta Railroad OCCU - ATS Container Leasing SA OCCX - Occidental Chemical Company OCE - Oregon, California and Eastern Railway OCEU - Oceanex Inc. OCFX - Owens Corning Fiberglass OCLU - Overseas Containers, Ltd. OCNU - Ocean Lines, Inc. OCPX - Occidental Chemical Company; Oxy Vinyls OCR - Oklahoma Central Railroad OCRR - Ottawa Central Railway OCRX - Oil Creek Refining Company OCSU - Scripps Institute of Oceanography OCTL - Oil Creek and Titusville Lines OCTR - Octoraro Railway OCTX - Octel America, Inc. ODTX - Oil-Dri Corporation of America OERR - Oregon Eastern Railroad OEDX - Ohio Edison Company OERR - Oregon Eastern Railroad OERX - Southern California Railway Museum OFCX - Ortner Freight Car Company OFOX - Residco OFSX - Tucson Electric Power Company OGEE - Ogeechee Railway OGEX - Oklahoma Gas and Electric Company OGSX - Iowa Southern Utilities Company OHCR - Ohio Central Railroad OHFX - Fluor Daniel Fernald OHIC - Ohi-Rail Corporation OHIO - Ohio Terminal Railway OHKU - Ohka American, Inc. OHOX - United States Department of Energy (Ohio Field) OHPA - Ohio and Pennsylvania Railroad OHRY - Owego and Harford Railway OILX - GE Rail Services OJGX - Oscar J. Glover OJTX - Tauber Transportation Company OKAN - Okanagan Valley Railway (OmniTRAX) OKCE - Okarche Central Railway OKCX - Lone Star Industries OKKT - Oklahoma, Kansas and Texas Railroad; Union Pacific Railroad OLAU - Occidental Chemical Corporation OLB - Omaha, Lincoln and Beatrice Railway OLDX - Old Line Holding Company, Inc. OLGX - Ineos Oligomers USA, LLC OLLU - Ocean Leasing, Ltd. OLNX - Olin Corporation OLO - Ontario L'Orignal Railway OLYR - Olympic Railroad OLYU - Olympic Container Corporation OLYR - Olympic Railroad OLYX - Olympia Petroleum, Inc. OLYZ - Showa Line, Ltd. OMAX - Omaha Public Power District OMID - Ontario Midland Railroad OMLP - Ohio Midland Light and Power OMLX - OmniTRAX Leasing, Ltd. OMNX - Omnisource; Steel Dynamics. OMRX - Ozark Mountain Railcar OMSX - Ohio Mulch; J. T. Leasing, Inc. ON - Ottawa Northern Railroad ONCT - Ontario Central Railroad ONER - Ontario Eastern Railroad ONRR - Ohio and National Railway Company ONSX - Oglebay Norton Industrial Sands, Inc. ONT - Ontario Northland Railway ONTA - Ontario Northland Railway ONTX - On-Track Railcar Services, Inc. ONW - Oregon and Northwestern Railroad ONYX - American Colloid Company OOCZ - Orient Overseas Line, Inc. OOLU - OOCL OOOX - Osborne, Inc. OOUU - Orient Overseas Line, Inc. OPE - Oregon, Pacific and Eastern Railway OPIX - Equistar Chemicals OPPX - Omaha Public Power District OPR - Oregon Pacific Railroad OPSU - EMP OPSX - Public Service Company of Oklahoma OPT - Orange Port Terminal Railway OPX - Ohio Power Company OR - Owasco River Railway ORA - Ormet Railroad ORCU - BSL Transport OREX - Oregon Department of Agriculture OROX - United States Department of Energy (Oak Ridge Operations Office) ORR - Osage Railroad OSCZ - Intermodal Services, Inc. OSL - Oregon Short Line; Union Pacific Railroad OSRX - Ontario Southland Railway OSSU - Eurovos B.V. OTCO - Owensville Terminal Company OTCR - Oakdale Traction Corporation OTDX - Greenbrier Leasing Corporation OTPX - Otter Tail Power Company OTR - Oakland Terminal Railway OTRX - On-Track Railway Services, Ltd. OTSX - On-Track Railway Services, Ltd. OTT - Ottumwa Terminal Railroad OTTX - TTX Corporation OTVR - Otter Tail Valley Railroad (RailAmerica) OUCH - Ouachita Railroad OUCX - Orlando Utilities Commission OURD - Ogden Union Railway and Depot Company OVEX - Ohio Valley Electric Company OVNZ - Overnite Transportation Company OVO - Ottawa Valley Railway OVR - Ohio Valley Railroad OWIX - Old World Transportation, Ltd. OWLU - Ocean World Lines, Inc. OWSX - Oil Well Supply Company OWTX - Shamrock Coal Company OXYU - Eurotainer US, Inc.