Hmm, can't clear the quote for some reason. Please ignore.
The good thing about the ballasts is that they were also used (much more extensively probably) as gypsum wagons, running from Kingscourt to the Irish cement factories several times a week. I'm gonna need two full rakes of those for gypsum trains (empty and laden) and one rake for my ballast ploughs, which are waiting patiently for the re-run lol.