Four miners killed in a tragic colliery disaster were all exposed to flooded pit contents under pressure, post-mortem examinations have revealed.
Detailed examination results relating to each man are likely to take a further eight to 12 weeks.
Phillip Hill, 45, Garry Jenkins, 39, David Powell, 50, and Charles Breslin, 62, died when water engulfed Gleision Colliery near Pontardawe, in South Wales.
Rescuers battled throughout the night and into the next day in the hope that all four men had survived the disaster on September 15.
Initial post-mortem results were released exactly one week after final confirmation came last Friday that all four men had died.
Exhaustive examination of the scene of the tragedy is ongoing at the Swansea Valley colliery and will continue for several weeks.
South Wales Police and the Health and Safety Executive are conducting a joint inquiry into the circumstances surrounding the disaster.
"Post-mortem examinations have been carried out and have confirmed that all four men were exposed to flooded pit contents under pressure," a police spokesman said.
"Specific information on each of the victims will be known following further investigation which is likely to take eight to 12 weeks."
He added that inquests into the four deaths will be opened next Tuesday afternoon. Details are to be confirmed.
