I was in many crushes at Ibrox and Hampden around that time. Usually at Ibrox it was getting out of the ground, it was usually fine on the terracing during the game, but at Hampden more often I was shiteing it during the game if I couldn't get in front of a barrier, as there were these huge surges, and you could end up about 20 steps down if there was a goal or even a near miss. Plus the uneven steps with the railway sleepers. Hampden had exits all round so you could escape onto the grass on the way out. I think at Parkhead it was different as you came off the terracing at street level.
But strangely the scariest time was a Dumbarton v Rangers game at Boghead, just approaching the turnstiles to get in. The whole street was full of people, and as you got nearer it got worse. The Dumbarton fans will remember the street better than me, think it was a dead end. Coming out of Tynecastle could be a bit tight, and then there was the bridge at Easter Road