| 1 | MALX | Mid-America Locomotive & Car Repair, Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 2 | MALX | Mathieson Alkali Works, Inc. | 7/1923-7/1937 | | NAKINA |
| 3 | MALX | Mid-America Locomotive & Car Repair, Inc. | Jul-00 | | NRHS |
| 4 | MALX | *MATHIESON ALKALI WORKS, INC. | | | PWRC |
| 5 | MALX | +MID-AMERICA LOCOMOTIVE & CAR REPAIR INC | | | PWRC |
| 6 | MALX | Mid-America Locomotive and Car Repair | | | RSRV |