Tributes are being paid today to the four men who died in the Gleision mining disaster. It's exactly year since the tragedy in the Swansea Valley which shocked Wales and the world.
Some of the victims' families have been attending private remembrance events while the Welsh public and politicians have been paying their respects.
Nicola Hendy reports.
Tomorrow marks a year since the Gleision Colliery disaster in which four men died.
First Minister Carwyn Jones says lessons must be learned to make sure an incident like it doesn't happen again.