One Friday morning in 1966 in a small town in Wales a mining spoils waste tip let go with a river of liquified rubble destroying buildings and a school. Killing 144 people, mostly children in their classrooms. The mechanics of how this happened are simple. The ignorance and economics of why this happened boggles the mind.With John Chidgey.Related episodes: Causality Premium Giveaway Causality Episode 20: Stava Dam Investigation and Reports: Coal Mining Aberfan Disaster Aberfan Thirty-year Rule Aberfan: The Mistake That Cost A Village Its Children Terrifying Tale Of Bungling Ineptitude Aberfan Lessons Learned Aberfan: The Geological Society Support Causality on PatreonEpisode Gold Producer: 'r'.Episode Silver Producers: Mitch Biegler, John Whitlow, Joseph Antonio, Kevin Koch and Oliver Steele.