| 1 | OWTX | Shamrock Coal Co., Inc. | added 1/1983; eliminated 10/1991 | | NAKINA |
| 2 | OWTX | Oneida & Western Transportation | 1/1980 | | NAKINA |
| 3 | OWTX | Oneida & Western Transportation | Jan-80 | | NRHS |
| 4 | OWTX | Shamrock Coal Co., Inc. | added 1/83; eliminated 10/91 | | NRHS |
| 5 | OWTX | *ONIEDA & WESTERN TRANSPORTATION | | | PWRC |
| 6 | OWTX | *RETIRED 10-31-91 ATP (1421) [SHAMROCK COAL CO.] | | | PWRC |
| 7 | OWTX | Shamrock Coal | | | RSRV |
| 8 | OWTX | Oneida & Western Transportation | | USA | TRAFFIC |
