Tully Mill Loco #12 with the weed killer wagon in tow as it crosses the 3'6" Queensland Railways main line at Jaffa. See a previous photo at this location of the "H" crossing, close up. Weed killer trains are run on all lines at all mills, There is also a mechanical grass slasher I have seen only once, towed by a locomotive, that is used on some Far North Queensland lines when the grass or weeds are excessive, like the next photo!