on what date did it take place?
21 October 1966
Aberfan disaster
The Aberfan disaster was the catastrophic collapse of a colliery spoil tip in Wales on 21 October 1966
in which country/region did the aberfan disaster take place? Wales
wiki:12992650
Aberfan disaster [SEP] Introduction
The Aberfan disaster was the catastrophic collapse of a colliery spoil tip in Wales on 21 October 1966. The tip had been created on a mountain slope above the village of Aberfan, near Merthyr Tydfil, and overlaid a natural spring. A period of heavy rain led to a build-up of water within the tip which caused it to suddenly slide downhill as a slurry, killing 116 children and 28 adults as it engulfed Pantglas Junior School and other buildings. The tip was the responsibility of the National Coal Board (NCB), and the subsequent inquiry placed the blame for the disaster on the organisation and nine named employees.