The Gresford Disaster: The Mother Who Spent 28 Years Trying to Bring Her Son Home
Emily Capper went to the Gresford colliery offices every single week for years, asking the same question. Had they found her son yet? He was 35 years old, married with children of his own, and his body was one of 254 that would never come out of the mine. Emily kept asking anyway. She was still writing letters and signing petitions in 1938, four years after the explosion, and she never got the answer she wanted.
Her story runs right through the middle of the Gresford disaster, one of the worst mining accidents in British history. On the morning of 22 September 1934, an explosion tore through the Dennis section of the colliery near Wrexham in North Wales, killing 266 men and boys in total. The mine was sealed six months later with most of the bodies still inside it, and it stayed that way. This is the story of what happened that night, why almost nobody was ever held to account, and why one family refused to stop asking.
Quick Answers
• When did it happen? At about 2am on 22 September 1934, at Gresford colliery near Wrexham.
• How many died? 266 men and boys, including three rescuers and a surface worker killed by a later blast.
• How many bodies were recovered? Just 11. The other 254 remain sealed in the mine to this day.
• What caused it? Nobody knows for certain. The inquiry pointed to gas and poor ventilation but never reached a firm conclusion.
• Was anyone punished? The mine manager was fined for falsifying safety records. Nobody else faced any real consequence.
A Night Shift Doubled Up for a Football Match
Gresford was one of the biggest pits in the area, employing over 2,000 men, and by the 1930s it was losing money. That put pressure on management to push output up, and safety standards down. The mine was known to be gassy, and the deeper districts of the Dennis section had a poor record for ventilation even before the explosion.
The night of 21 September 1934 was busier than usual, because Wrexham AFC were playing Tranmere Rovers the next afternoon. Plenty of miners swapped shifts or worked doubled up so they could get to the match, which meant more men than normal were underground when the explosion hit at around 2am.
Only six men escaped the section where the blast happened, all of them from the same district, 29’s. They had been taking a break when they felt a thud and a wall of dust hit them, and one of them turned to the others and said the bottom had gone. They helped a colleague who kept collapsing on the climb out, hauling him up ladders and through rockfalls until they finally reached safety. Everyone else in Dennis, more than 260 men, was trapped behind the falls and a fire that was already spreading fast.
The Rescuer Who Buried His Daughter the Week Before
One of the fullest accounts of what happened next comes from Parry Davies, a rescue team captain at the neighbouring Llay Main colliery, who wrote it all down two years later. He was woken at 4.30am by frantic knocking at his front door. The message was blunt: “All rescue men are needed at Gresford”, with 300 men still underground and barely any of them out. Davies had buried his own five-year-old daughter only a week earlier. He got dressed anyway.
By 5am Davies had five men and a lorry at Gresford. What followed was hours of nothing. His team was shunted from a cabin to the general office to a joiner’s shop while officials worked out what to do, and by his own account the waiting was worse than anything that came after. It was 8.40am, nearly seven hours after the explosion, before the first full rescue team was finally sent down.
A Canary, Three Deaths, and a Fight to Go Back
That first team, from Llay Main and led by John Charles Williams, was sent into the 20’s return airway to check whether trapped miners might still be reachable from that side. Their canary died before they had gone five metres. They pressed on anyway. Two of the team collapsed, and by the time Williams got them out, three men, including William Hughes and John Lewis, had been killed by carbon monoxide. Williams himself barely survived.
Davies’s team went in straight after to help carry the bodies out, and found conditions clear enough at first that they didn’t need breathing apparatus of their own. Further in, they had to fight to be allowed to go back for a body they’d had to leave behind, with one man reportedly shouting that the reputation of every rescue man was at stake. Officials refused. That stretch of the mine was fenced off instead.
Rescue efforts regrouped and pushed on through Saturday night from the intake side, where a fire was now raging at the entrance to 29’s district. Davies described finding the roadway ahead burning in one white mass, all the colours of the rainbow. By Sunday afternoon it was clear that pushing further risked doubling the death toll among the 200 or so men still working underground on the rescue itself. Sir Henry Walker, the Chief Inspector of Mines, ordered everyone out at 6pm.
Sealing the shafts wasn’t even the end of the danger. As crews built the seals over the pit tops, a further explosion inside the mine blew the covers off again and killed a Gresford surface worker who was helping fit them. It was the disaster’s final, and in some ways cruellest, casualty: a man killed by the very mine that had already taken so many of his colleagues, standing above ground where he should have been safe.
A Mother Who Wouldn’t Stop Asking
Emily Capper’s son John was one of the 261 men killed in the explosion itself. Like hundreds of other families, the Cappers spent the following weeks and months trying to find out when his body would be brought up. When no answer came, they started writing letters. Over the following years the family sent nine letters and raised two petitions, according to records held at The National Archives.
In November 1934, Emily’s daughter Margaret wrote to the man leading the official inquiry, describing the toll the wait was taking on her parents. Sir Henry Walker wrote back that he had carried her letter around with him, not knowing how to offer comfort, and told her he had lost a son himself in tragic circumstances a decade earlier. He urged patience, warning that recovery work could put more lives at risk.
It didn’t get easier. A recovery team finally entered parts of the mine in March 1935, six months after the disaster, and managed to retrieve the body of John Lewis, one of the three rescuers who died. But inspectors then refused to let anyone go further into the Dennis section, citing the risk of fresh fires. The Cappers kept writing anyway. In 1935 William Capper appealed directly to the Minister of Mines, and Walker was sent to visit the family at home. He later admitted there was only the slightest chance of any bodies being found, adding that Emily said she’d be content if she could only have a piece of one of his bones.
The following year, with the bodies still underground and the official inquiry still unfinished, Gresford reopened for coal production anyway. Emily kept turning up at the colliery office every week to ask whether her son had been found. A 1937 relief fund report noted this routine, and that she also visited the local county court registry each week to ask about a tombstone allowance for when the body was found. It never was. By 1938, four years after the disaster, an inquest formally closed the case without recovering the remaining bodies. Emily wrote one final plea to the government, asking them not to close the inquest ‘until some attempt has been made to get the bodies’, but there was nothing more anyone could do. She died in 1962, aged 88, still without her son.
The Records That Went Missing, and the One That Was Faked
The official inquiry took over two years to reach a verdict, and even then it never named a cause. Sir Henry Walker’s report was published in January 1937 and concluded that a spark had probably ignited a build-up of firedamp, but he stopped short of blaming any particular person or decision. Local anger only grew from there.
Legal proceedings against the pit manager, William Bonsall, and the colliery company began that April. Most of the 42 charges were dropped before the owners ever had to give evidence. The one conviction that stuck was for falsifying safety records. Assistant surveyor William Cuffin later admitted in a police statement that he’d been told to fill in fake air measurements for weeks when none had actually been taken, saying the readings recorded on those dates were not taken in the pit and are false. Bonsall was fined and the company had to pay costs, a sum that felt paltry set against the scale of the disaster.
That falsified notebook still exists. It went on public display for the first time in Wrexham in September 2025, alongside letters from grieving families and transcripts of the frantic phone calls made as the disaster unfolded, as part of a National Archives exhibition marking the 91st anniversary.
The Song Nobody Wanted to Write, and the One Nobody Can Stop Singing
Within days of the disaster, an anonymous ballad called ‘The Gresford Disaster’ was being sold as a broadside on the streets, sharply critical of the mine’s management. It went on to be recorded by folk singer Ewan MacColl among others, and the sleeve notes to his version point out that it actually understates the final death toll.
A very different piece of music came out of the tragedy two years later. Robert Saint, a miner from County Durham, wrote a solemn brass band tune simply called ‘Gresford’. It was deliberately written as an instrumental, without words, because the miners who died couldn’t sing along. Colliery bands still play it today, and it’s a fixture of the Durham Miners’ Gala every year, now generally known as the Miners’ Hymn.
What Happened Next
By the end of September 1934, more than 1,000 Gresford miners had signed on the unemployment register, since the mine stayed shut until 1936. Public donations to a relief fund raised well over half a million pounds for widows and children, though the way it was distributed caused its own bitterness among families who felt they were being treated as charity cases rather than victims of a workplace failure.
Almost all the private company’s own records were destroyed when the pit was nationalised in 1947, which makes the surviving National Archives material even rarer. Gresford colliery finally closed for good in 1973. A memorial made from the old pit-head winding wheel was unveiled near the site in 1982, and every year on 22 September, families still gather there to remember the 266 men and boys who never came home, 254 of whom are still down there.
For a fuller sense of what a Welsh mining community could lose in a single morning, our piece on the Aberfan disaster covers a very different tragedy that struck a South Wales valley three decades later. There’s more on the world Emily Capper’s family worked in, and on the women who kept collieries like Gresford running above ground, in our features on the pit brow lasses of 19th century coal mines and Adrian Street’s return to the Welsh coal mines for a famous photoshoot.
You Might Also Like
• The Tragedy of Aberfan: the 1966 disaster that devastated another Welsh mining community.
• The Pit Brow Lasses of 19th Century Coal Mines: the women who worked the surface of Britain’s collieries.
• The Day Adrian Street Returned to the Welsh Coal Mines for an Iconic Photoshoot: a striking image rooted in the same industry.
