2003 was the end of the block train to Sligo, the wagons hung on till mid-2005 on liner trains to Claremorris(via Portarlington obviously) and Sligo.. @Maynerhas some nice shots of them tacked onto the back of a Claremorris liner on this thread
Oranmore ended earlier, although I have yet to find an end date, possibly early 90s? Rails though the West has some nice pics of the Oranmore flow, including a picture of the empties returning to Dublin via the WRC, Mullingar and Athlone, but I don’t have a page number handy as it’s packed away with everything else at the moment..