| 1 | RTPX | General Electric Railcar Corp. | added 4/2004; 7/2005 | | NAKINA |
| 2 | RTPX | Savage-Tolk Energy Services | added 4/2001; eliminated 4/2004 | | NAKINA |
| 3 | RTPX | Wheelabrator Coal Services Co. | added 4/1982; 1/1994-7/2000; eliminated 4/2001 | | NAKINA |
| 4 | RTPX | Wheelabrator Coal Services Co. | added 4/82; 1/94-7/2000; eliminated 4/2001 | | NRHS |
| 5 | RTPX | Savage-Tolk Energy Services | added 4/2001 | | NRHS |
| 6 | RTPX | *SAVAGE-TOLK ENERGY SERVICES [(WCSX) WHEELABRATOR COAL SERVICES CO.] | | | PWRC |
| 7 | RTPX | +GENERAL ELECTRIC RAIL SERVICES CORP. | | | PWRC |
| 8 | RTPX | Wheelabrator Coal Services (GE Rail Services) | | | RSRV |
| 9 | RTPX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
