A new TV drama marking the 25th anniversary of the Friction Dynamics strike in Caernarfon will premiere next month.
S4C has released a first look of 'Y Streic Fawr' (The Big Strike) which tells the story of one of the UK's longest-running industrial disputes.
Some of the 86 workers at the former car parts factory will also appear in the three-part series, which has been mostly filmed in and around the Caernarfon area.
Writer Ffion Dafis has also worked closely with some of the strikers to reflect their experiences.
She said: "I felt very strongly that I wanted to write this drama to mark 25 years since a group of people from Caernarfon took such a brave stand for their rights and their future."
"I hope I've done justice to their story, honoured their perseverance, and conveyed what the strike meant to them, their families, and the wider community."
The strike began on 30th April 2001 in a dispute over pay and working conditions - eight weeks later, the workers were sacked by controversial American owner Craig Smith, but they stayed on the picket lines for nearly a thousand days until just before Christmas 2003.
The workers won an industrial tribunal against Friction, but they never receieved any damages - and the owners were never formally punished by the UK Government.
Producer Llyr Morus from Mojo Productions, said: "As someone who was brought up in Caernarfon, who remembers sounding the horn when passing the workers on the picket line and going to the rallies on Y Maes, being able to tell this story - and the fact that the former employees have trusted Mojo Productions to do so - is a privilege."
"The sacrifice made by the 86 men and women twenty-five years ago was enormous. That sacrifice led to change securing better working conditions for future workers, so they deserve our deepest thanks. Marking this history is important in order to educate future generations - 'Us today, you tomorrow.' "
"To this day, the impact of the strike can still be seen in Caernarfon, with friendships, families and communities torn apart. It is important that this story is told honestly, with balance, humour, wit and passion of the people of Caernarfon."
Filming on the series, directed by Huw Chiswell, took place earlier this year - with the cast led by Rhodri Trefor as shop steward Tomi Jones, who went onto become a full-time officer for the Transport and General Workers Union (TGWU) in North Wales.
Gruffudd Glyn plays Gerald Parry, who spoke at protest rallies during the strike and Rhys ap Trefor plays John Davis, who represented the 86 workers in court.
MônFM presenter Emyr Gibson also appears in the ensemble cast, alongside Carwyn Jones, Sion Eifion, Catrin Powell, Manon Wilkinson and Betsan Ceiriog.
The series has also received Welsh Government support via production funding from Creative Wales.
Llion Iwan, chief content officer at S4C, added: "Although this story of a fight for justice is set in North Wales, it's a timeless one that resonates with many communities across Wales."
"The struggle of the factory workers in Caernarfon is mirrored in that of the miners and steelworkers of the South Wales valleys and North-East Wales. The determination and perseverance shown by the community continue to be discussed to this day."
"It was particularly striking that, while filming earlier this year, people would drive past and sound their car horns in support, just as they did more than twenty years ago."
"This is a story that remains relevant today, and S4C is proud to bring it to audiences across Wales through this powerful drama series."
Part one of Y Streic Fawr will be shown on S4C on Sunday 6th December at 9pm with the full series available to stream on S4C Clic and BBC iPlayer.
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