A man accused of causing the death of four miners in the Gleision Colliery disaster has appeared at Swansea Crown Court.
Malcolm Fyfield was the general manager of the mine when the incident happened in September 2011. He has been charged with four counts of gross negligence manslaughter.
Mr Fyfield was remanded on bail until May 20, when he will be expected to enter a plea of guilty or not guilty to the charges.
Also appearing in court were representatives of MNS Mining Ltd, which owned the mine at the time of the incident, to answer charges of corporate manslaughter.
Lawyers told the court that the company representatives would also not be entering a plea, and will also appear in court on May 20.