- 1953
Collision: Highleigh Rd LC, GORDONVALE, NCL, C17.927on 290 Up & a vehicle.
- 1955
Derailment: 14m 40ch, LAPPA-MT GARNET, B15con.42, due to loose ballast on the road.
- 1957
Derailment: MINGELA, GNL, DEL1401 on 25D, due to running through catchpoints.
- 1958
Collision: 619m 72ch, near QUILPIE, GWL, C17.982 on 658 Up & a Holden ute.
Derailment: CORINDA, ML, BB18.1074 on 276 Up at catchpoints from Weighbridge Rd to main line, due to either faulty points or points being changed under the loco.
- 1968
GRAHAM-MOURA MINE JCT, MSL, opened [151.4km].
- 1971
Clyde DEL2102 [70-713] entered service
- 1973
Clyde DEL1553 [72-768] entered service [reno.2313 on 30 Mar 2000, MAXI 24].
- 1976
Collision: MERINGA, NCL, DEL1401 on 154 Up & Ford sedan.
Clyde DEL1561 [75-807] entered service [reno.2307 on 22 Oct 1998, MAXI 3].
- 1977
Collision: Maryborough Wharf, Maryborough Wharf Bch, DH71 & a mobile crane.
- 1978
Derailment: SANDGATE, Shorncliffe Bch, DEL1464 & SXV.1642 on S80 Up on a speed restriction 300m from station on SHORNCLIFFE end, due to wheel & flange wear combined with poor curve alignment.
- 1988
Com-Eng EL3234 entered service.
- 1996
Two Driver Operation introduced TOOWOOMBA-WARWICK, SL, & WARWICK-GOONDIWINDI, SWL
- 1997
Com-Eng EL3274 corporate livery.
Researched and compiled by Peter Burkitt, with later additions as sourced. About this list, abbreviations and the full calendar