The Aberfan Disaster

Associated With

The National Coal Board operated the coal tip; the disaster was not a created work - associated person or organisation

Defining Feature

A slide of colliery waste that struck the village and Pantglas Junior School

Status

Historical event - Investigated by a public tribunal; Parliament later enacted the Mines and Quarries (Tips) Act 1969

Overview

On 21 October 1966, a coal-waste tip collapsed above the Welsh mining village of Aberfan.

A mass of colliery waste moved down the mountainside, overwhelming nearby houses and Pantglas Junior School. The disaster killed 144 people, including 116 children.

Five days later, the Secretary of State for Wales appointed a public tribunal. Its findings placed responsibility on the National Coal Board, while Parliament later enacted stronger duties for the safety of mining tips.

Why It Mattered

The tribunal found that the disaster could and should have been prevented and placed responsibility on the National Coal Board.

Aberfan became an enduring example of institutional failure, while later legislation created stronger duties for the operation and safety of mining tips.

Waste Tip Above Aberfan

• Coal waste had been tipped for years on the mountainside above the community.
• The collapsed material moved down the mountainside and into Aberfan.

Tribunal Proceedings

• The Secretary of State for Wales appointed the tribunal on 26 October 1966.
• Its evidence included witness statements, hearing transcripts, meteorological reports, correspondence and plans.
• The tribunal’s first finding placed blame on the National Coal Board.
• It concluded that the disaster could and should have been prevented.

Tip-Safety Duties

• The 1969 Act imposed duties for active mine and quarry tips, including rules, plans and geological records.
• It gave local authorities powers to obtain information, test disused tips and require remedial operations.

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