Turntable pit is still there it was covered over post the last trains in 1996 but was filled in years before that.
Edo, I've the records from 1960 to 1966, the gaa specials were in 1963 which were the last passenger trains over the Macmine junction line, passengers travelled on the line to Waterford up until the mid 1980's on gaa, river cruise, rpsi, day trips and knock specials.
I believe the changes to the track layout and demolition of the second platform took place in the late 1970's and remained the same till recently ie passing loop with a long headshunt at the bridge end.
The first bridge on the macmine section was destroyed in the early 1990's which severed the headshunt out to the barrow bridge.