On the 18th of June 1984, thousands of pickets clashed with police at Orgreave in Yorkshire.
It was one of the most brutal clashes of the 1984-85 Miners' Strike, with hundreds of miners and police left seriously injured.
Nearly 30 years on, Wales This Week hears from miners who stood on the picket lines during the strike.
Almost thirty years ago, infamous clashes took place between striking miners and police in South Yorkshire. Today, there are new calls for a public inquiry into the actions of police during the so-called Battle of Orgreave.
South Yorkshire Police were mainly responsible for policing the picket - the same force who were recently made to apologise for their handling of the Hillsborough disaster in 1989.
Tonight, our current affairs programme Y Byd ar Bedwar speaks to two ex-miners who were accused of rioting in Orgreave, and investigates claims that senior police officers attempted to trap and frame protestors.
Gwyn Loader reports.
You can watch the programme on S4C tonight at 9.30pm.