Enterno: Activist group Reclaim The Power has pledged to shut down the UK's largest opencast coal mine in south Wales this May in protest against fossil fuels. Hundreds of people are planning to take part in a mass blockade of the UKs largest opencast coal mine Ffos-y-fran, near Merthyr Tydfil in south Wales. It will coincide with the Welsh Assembly elections on May 5. Reclaim The Power spokeswoman Ellie Groves said in a statement: "The only way we can stop catastrophic climate change is taking action...