Pantglas School buried by colliery tip
At about 9:15 a.m. on 21 October 1966, after days of heavy rain, a waste tip from Merthyr Vale Colliery sited above springs slid down onto Aberfan in South Wales, burying Pantglas Junior School minutes after morning assembly. It killed 144 people, 116 of them children, most aged seven to ten. Gaynor Madgwick, aged eight, was trapped in her classroom and dug out alive, but her brother and sister in the same school were killed.