Gleision colliery: Mine death families 'need answers'
17 September 2012 Last updated at 13:48 BST
The families of four miners killed in the Gleision colliery disaster have said they are still waiting for answers about what happened.
Charles Breslin, Philip Hill, Garry Jenkins and David Powell died when the Swansea Valley mine flooded.
A year on, their families have spoken about their ongoing grief, as Hywel Griffith reports.