I remember that day well. I was working in Bray station at the time and word came very quickly through the signal cabins that the disaster had happened. After finishing my shift I went down to Clough to view the scene. Unlike today the site wasn't closed off and anyone who wanted to could wander around. No health & safety rubbish - just take care of yourself and don't get in the way! The train (as reported in the Feb 1976 IRRS Journal) was composed of B132 + 2585, 1922, 2154, 1556, 2150, 2424, 3192, 2570. Sadly, five persons died in the disaster - four members of the public and one CIÉ staff member. A further 43 persons received injuries of varying severity. There were a total of 94 passengers on the train. Some more photos of the aftermath (aerial shots from the Irish Press):
Aerial view from the Rosslare end of the train. The digger which hit the bridge can be seen to the left of the third coach from the rear of the train (2424). In front of 2424 are 2150 and 1556 (at an angle to the right) then the remains of 2585, 1922 and 2154 which were totally destroyed. Locomotive B132 lies partly covered by the wreckage to the left of the track.
[ATTACH=CONFIG]22012[/ATTACH]
Aerial view from the eastern side of the line at the Dublin end of the train. 1556 is at the left-hand side of the image, while the upturned B132 can be seen just above the jib of the road crane. The scale of the destruction of the three 'wooden bodied' coaches can be judged in this view.
[ATTACH=CONFIG]22013[/ATTACH]
B132 lies upturned at the foot of the small embankment partly buried by wreckage. At the top are 1556, 2150 and 2424.
[ATTACH=CONFIG]22014[/ATTACH]
The shattered remains of 2585, 1922 and 2154 with the relatively intact 1556 at the top.
[ATTACH=CONFIG]22015[/ATTACH]
The damage to the bridge caused by the digger (seen in the background) and the ensuing crash can be seen in this view from the eastern side of the line. The two coaches are 2424, on the left, and 2150. The five people who died were all in the latter. It will be seen that the rear two compartments and vestibule of 2150 were completely destroyed when the coach was hit by the structurally sounder Park Royal vehicle.
[ATTACH=CONFIG]22016[/ATTACH]
The full accident report can be found at: http://www.raiu.ie/download/pdf/accident_gorey.pdf