Aberfan was a tight-knit mining village in South Wales, built around the Merthyr Vale Colliery, which had been operating since the late 1800s. The colliery was the lifeblood of the community. Nearly every family in the village had someone who worked underground. The mine produced coal, but it also produced enormous quantities of waste — shale, sandstone, and rock — that was dumped in large heaps on the hillsides above the village. These were called spoil tips, and by 1966, there were several of them looming over Aberfan. Tip Number 7 sat directly above Pantglas Junior School.
The Aberfan disaster was a catastrophic collapse of a colliery spoil tip in the Welsh village of Aberfan, near Merthyr Tydfil, caused by a build-up of water in the accumulated rock and shale, which suddenly started to slide downhill and engulfed the Pantglas Junior School, 1966.
For years, residents had raised concerns about the safety of the tips. Small movements in the waste heaps had been noticed. People reported seeing the ground shift after heavy rain. Those concerns were passed on to the National Coal Board (NCB), the government body responsible for managing the collieries and their spoil tips. The NCB did not act. No proper stability assessments were carried out on Tip Number 7, and the villagers’ warnings were set aside.
The mountain that moved, 1966.
October 1966 had been wet. Heavy rain fell across the region in the days leading up to October 21, soaking into the tip and saturating the accumulated waste. Water built up inside the heap, weakening the structure from within. On the morning of October 21, the school day had just begun. Children aged 7 to 10 sat in their classrooms at Pantglas Junior School. At 9:15 AM, Tip Number 7 gave way. More than 150,000 cubic metres of coal waste broke loose and began moving down the hillside at speed.
An aerial picture shows the top of the mountain and the mining spoil that has run down the hillside destroying the school and part of the town, 1966.
The slurry hit Pantglas Junior School with devastating force. The school’s walls offered no resistance. Within seconds, classrooms were buried under thick, suffocating sludge. Children and teachers were trapped where they sat. The wave of debris also struck several nearby houses, burying them entirely. The village had almost no warning before the mass of waste arrived.
An aerial picture shows the town of Aberfan below, the hill and mud slide, and how the mud destroyed the school and houses in the town below, 1966.An aerial picture shows the town of Aberfan below, the mud slide, and how the mud destroyed the school and houses, 1966.An aerial picture shows the disaster scene at Aberfan, South Wales, 1966.An aerial view of the scene of the disaster where a sea of mud and coal dust smashed through the school and a row of houses, 1966.
The disaster killed 144 people in total — 116 children and 28 adults. Most of the children were between the ages of 7 and 10. For many families in Aberfan, an entire generation was wiped out in a matter of seconds. Parents who had dropped their children off at school that morning raced to the scene to find the building buried under a black mountain of waste.
The scene at Aberfan, Glamorgan, after a man-made mountain of pit waste slid down onto Pantglas School and a row of housing, killing 116 children and 28 adults, 1966.The Aberfan disaster was a catastrophic collapse of a colliery spoil tip in the Welsh village of Aberfan, near Merthyr Tydfil, on 21 October 1966, engulfing the Pantglas Junior School in Moy Road, killing 116 children and 28 adults, 1966.
Rescue efforts began immediately. Local miners, police, firefighters, and hundreds of volunteers descended on the school. They dug with their hands and with shovels, pulling debris aside piece by piece. Every time digging stopped, silence fell over the site as rescuers listened for sounds of life beneath the waste.
Policeman Victor Jones carries a little girl from the wrecked school as woman anxiously looks to see if she can recognise her, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.Rescue workers force their way into the crushed school building amidst the debris, 1966.Miners, villages and emergency services on the roof of the Pantglas Junior School, hoping for signs of life below, 1966.At the Pantglas Junior School, local villagers and emergency services help each other to move wood and obstacles out of the way, hoping to reach those stranded in the mud slide, 1966.
The scale of the destruction made the rescue effort extraordinarily difficult. The school had collapsed under the weight of the waste, and large sections of the building were completely crushed. Workers moved carefully to avoid causing further collapse. Bodies were recovered one by one throughout the day and into the following days.
So far 107 bodies, including 100 children, have been recovered from the wreckage of the crushed village school, 1966.The death toll in the Aberfan disaster rose to 116 bodies, only seven of them adults, recovered from the school, 1966.The digging stops as another body is brought from the shattered Pantglas Junior School following the catastrophic collapse of a colliery spoil tip in the Welsh village of Aberfan, killing 116 children and 28 adults, 1966.Landslides, disaster, school engulfed by coal tip killing children and teachers buried in the school and surrounding area, 1966.
Up on the hillside, emergency services and miners worked to stabilise the remaining waste. Sandbag lines were formed to prevent further movement. Men passed bags hand to hand along chains stretching up the slope. Bonfires were lit near the edge of the slide to burn the shattered timber from the school and destroyed houses.
Emergency services and miners on the hillside where the mud slid from, 1966.Local emergency services and miners travel high up onto the hillside, to put up sandbags along the route of the mud slide, 1966.Men line up to pass sandbags filled with the hillside mud, away from the disaster zone, 1966.Local emergency services and miners travel high up onto the hillside, to put up sandbags along the route of the mud slide, 1966.Emergency services and miners on the hillside where the mud slid from, 1966.A bonfire is made near to where the mud slide has come to a halt, to burn the wood and wreckage of the school and local houses, 1966.A bonfire is made near to where the mud slide has come to a halt, to burn the wood and wreckage of the school and local houses, 1966.A bonfire is made near to where the mud slide has come to a halt, to burn the wood and wreckage of the school and local houses, 1966.A bonfire is made near to where the mud slide has come to a halt, to burn the wood and wreckage of the school and local houses, 1966.
Below on the streets of Aberfan, crowds gathered in silence and disbelief. Parents waited for news. Villagers of all ages stood watching the rescue operation, helpless. The look on the faces of the crowd captured by photographers that day showed the full weight of what had happened — shock, grief, and horror that could not yet be fully processed.
Onlookers in the town of Aberfan look shocked and bewildered as the rescue effort at the Pantglas Junior School continues, 1966.Two young school girls watch anxiously in bewilderment and disbelief as the rescue effort for survivors at the Pantglas Junior School frantically goes on, 1966.Local villagers, families, young and old look on in horror towards the school and scene of devastation, waiting for news, 1966.Local villagers, including a young mum carrying her child, are shocked and look on in bewilderment as the rescue effort at the Pantglas Junior School carries on, 1966.Shocked onlookers look towards the school and the mud and devastation caused when mining spoil from the hillside engulfed the Pantglas Junior School, 1966.Shocked onlookers look towards the school and the mud and devastation caused when mining spoil from the hillside engulfed the Pantglas Junior School, 1966.Children on the hillside overlooking Aberfan watch as a bonfire is made near to where the mud slide has come to a halt, to burn the wood and wreckage of the school and local houses, 1966.
Salvation Army workers moved through the crowds offering what comfort they could. Older residents, overcome with grief, were helped away from the scene. The community pulled together to support one another, ferrying supplies and getting people to safety in whatever vehicles were available.
An elderly lady is helped and consoled as she is lead away to safety in the village of Aberfan, 1966.A lady from The Salvation Army consoles an elderly lady who is distraught at the unfolding events in Aberfan, 1966.Local villagers help each other, ferrying each other in whatever vehicles they can to deliver supplies and get people to safety, 1966.A police woman and policeman trying to restore some calm and order in the village as the rescue effort goes on, 1966.
News of the disaster spread across the United Kingdom within hours. People gathered around television sets to watch the reports coming in from South Wales. The images of the buried school and the grief-stricken village shocked the entire nation.
Local people in Aberfan gather in mass to watch the news reports of the Aberfan disaster, 1966.The Prime Minister arrives at the school, 1966.
The funerals began in the days that followed. Most of the 116 children were buried together in a mass grave on the hillside cemetery above Aberfan. Rows of small white coffins were carried through the streets as thousands of mourners lined the route. A large cross made from flowers and wreaths was laid on the hillside above the graves.
The mass funeral at Aberfan, 1966.A general view at the cemetery during the funeral of 82 disaster victims, 1966.Mourners walk through the streets on their way to the cemetery to attend the mass funeral for victims of the Aberfan mud slide disaster, 1966.The huge cross of wreaths on the Aberfan hillside cemetery as the funerals take place, 1966.The Aberfan hillside cemetery as the mass funerals take place, 1966.Rows of headstones in Aberfan cemetery mark the final resting places of the dead in the disaster, 1966.
Queen Elizabeth II and the Duke of Edinburgh visited Aberfan and met with families affected by the disaster. The Royal visit brought the village to the attention of the world and underlined the national scale of the grief being felt across Wales and the United Kingdom.
Queen Elizabeth II with her husband the Duke of Edinburgh and the Mayor of Martyrs Tydfill visit Aberfan, 1966.Queen Elizabeth II, Aberfan, Wales, 1966.The Queen visiting Aberfan, South Wales to open a new community centre, 1973.
The government established a Tribunal of Inquiry, chaired by Lord Justice Edmund Davies, which began hearing evidence on November 2, 1966. The tribunal called witnesses including residents, engineers, and NCB officials. Its findings were clear and damning. The disaster was not an act of nature. It was the direct result of the NCB’s failure to manage Tip Number 7. The tribunal’s report described the NCB’s conduct as showing “bungling ineptitude” and a “lamentable lack of foresight.” The organisation had known for years that the tip was built over natural springs and was potentially unstable. No action had been taken.
Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.The Aberfan disaster was a catastrophic collapse of a colliery spoil tip in the Welsh village of Aberfan, near Merthyr Tydfil, caused by a build-up of water in the accumulated rock and shale, which suddenly started to slide downhill and engulfed the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.An aerial picture shows the Pantglas Junior School, collapsed under the weight of mud, and the many villagers and emergency services helping to free trapped children and adults, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Miners take a short well earned break for a sit down, a hot drink, cigarette and to gather their thoughts as the rescue effort carries on behind them, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Local men, emergency services all dig for possible signs of life at the Pantglas Junior School, which has collapsed in a catastrophic mud slide, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.The Aberfan disaster was a catastrophic collapse of a colliery spoil tip in the Welsh village of Aberfan, near Merthyr Tydfil, caused by a build-up of water in the accumulated rock and shale, which suddenly started to slide downhill and engulfed the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.The disaster scene at Aberfan, South Wales, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.An aerial picture shows the Pantglas Junior School, collapsed under the weight of mud, and the many villagers and emergency services helping to free trapped children and adults, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Local men and the emergency services hastily dig through the mud for survivors at the Pantglas Junior School, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.Local men, emergency services all dig for possible signs of life at the Pantglas Junior School, which has collapsed in a catastrophic mud slide, 1966.Mud and devastation caused by mining spoil from the hillside engulfing the Pantglas Junior School, 1966.
The NCB was ordered to pay compensation to the bereaved families and to Aberfan. The process was slow, and many families found the payments inadequate for what they had lost. Compounding the anger, the Aberfan Disaster Memorial Fund — which had received donations from around the world — was controversially used to contribute to the cost of removing the remaining spoil tips. The tips that the NCB itself should have been responsible for clearing were partly paid for by money donated to the victims’ families.
The Aberfan disaster, 1966.The Aberfan disaster, 1966.A car trek to Stratford, London, 1966.
The children who survived returned to school and stood in silent tribute to their 116 classmates. That image — nearly 200 children paying their respects where lessons had continued just days before — fixed itself in the memory of everyone who saw it.
Nearly 200 Aberfan children returned to school and stood in silent tribute to their 116 friends who died in the tip disaster, 1966.
Andrew Thompson is an archaeologist and historian who specializes in the study of war and conflict. He writes about the brutal history of warfare, including the World Wars and other significant conflicts. Through his work, he aims to deepen our understanding of the human cost of conflict and inspire us to work towards a more peaceful future.
