No.461 is scheduled to return light engine from Whitehead to Dublin on Thursday 29th May, following its substitution for No.85 on the Saint Canice railtour.
The outline timetable is:
Whitehead Excursion 10:05
Carrickfergus 10:17
Belfast Central 10:47
Lisburn 11:11
Lurgan 11:30
Portadown 11:38
Newry 12:04
Dundalk 12:30
Drogheda 13:20
Malahide 13:57
Dublin Connolly 14:16
The Mallow viaduct was not until 9th of August 1922, it may well have been that the standard route of this mail train was up the North Kerry line to Limerick and on to Dublin from there.
Your best bet would be to keep an eye on the RPSI website or if you get a RPSI membership then you will get a email newsletter about everything that is going on.
The osi map viewer is pretty good, http://maps.osi.ie/publicviewer/#V1,594711,772008,1,10
Select historic 25 on the right and zoom in. I find it easier to navigate in the normal map view to where I want to see and then change to the historic 25.
That picture has a strong blue tint (look at the grass) which may be masking a light lime green, I think this might be truer but its hard to tell without looking at the original
Movement in the yards is controlled by the shunters who gives instructions to the drivers. The shunters set the points manually and control the movements of the trains either via hand signals or via a shunters radio to the driver.
Movements into and out of the yard would be coordinated by CTC and the shunter.
Would anybody know of any source online where I could see pictures of Portarlington Signal Box back in the days of semaphore, or failing that any good books that have one.
Thanks Snapper
any chance this is it, I know its not an A class but its in the style you are talking about and the period covered fits
http://www.bookdepository.co.uk/From-CIE-IR-Mark-Darby/9780711034761?b=-3&t=-20#Fulldescription-20
€7 each including postage
Aspects of Modeling, Railway Electrics. Ian Morton
ISBN: 9780711033436
Aspects of Modelling, Digital Command Control, 2nd Edition, Ian Morton
ISBN:9780711034990
well they have listed it in their 2014 network statement. Disused platforms don't seem to be listed except for grand canal dock which is down as not yet available.