On October 21, 1966, thousands of tons of coal mining waste slid down a mountainside and devastated the mining village of Aberfan. The black mass crashed through the local school. 144 people were killed, of which 116 were schoolchildren. Gaynor Madgwick was there, and severely injured at eight years old. Here, Gaynor tells her own story and interviews people affected by that day, to tell their stories of survival and healing. With many color and black & white photos.