For me it's one of those defining moments - I was the same age as many of those children who died, and I remember watching the black and white television footage with my grandfater (who had been a miner) in stunned fascination.
I also remember reckoning the 30 in my own class against the over 100 who died. It just seemed such a huge number that I couldn't quite grasp it. And the idea of a rain-sodden mountain creeping down its own hill to devour the children and fill their classrooms with a horrible black, choking slurry seemed really scary.