| 1 | RMSX | Harsco Track Technologies | 7/2000-7/2005 (not listed) | | NAKINA |
| 2 | RMSX | Pandrol Jackson, Inc. | 1/1994 (not listed) | | NAKINA |
| 3 | RMSX | Pandrol Jackson, Inc. | Jan-94 | | NRHS |
| 4 | RMSX | Harsco Track Technologies | Jul-00 | | NRHS |
| 5 | RMSX | *PANDROL JACKSON, INC | | | PWRC |
| 6 | RMSX | +HARSCO TRACK TECHNOLOGIES | | | PWRC |
| 7 | RMSX | Harsco Track Technologies | | | RSRV |
| 8 | RMSX | HARSCO TRACK TECHNOLOGIES | | | SCAC4 |
| 9 | RMSX | Harsco Track Technologies | | USA | TRAFFIC |
