TWR...its worth perusing the Wiki entry, as there is a lot of information there, about the perfidy of the NCB and its Chairman, Lord Robens.
https://en.wikipedia.org/wiki/Aberfan_disaster
A short extract :::::
"Anger at the NCB erupted during the inquest into the deaths of 30 of the children. The Merthyr Express reported that there were shouts of "murderers" as children's names were read out. When one child's name was read out and the cause of death was given as asphyxia and multiple injuries, the father said "No, sir, buried alive by the National Coal Board".
The coroner replied: "I know your grief is much that you may not be realising what you are saying" but the father repeated:
I want it recorded – "Buried alive by the National Coal Board." That is what I want to see on the record. That is the feeling of those present. Those are the words we want to go on the certificate"
Strong stuff.