I know that there is a song called: Palaces of Gold which was specificaly relates to the Aberfan disaster I am sure Martin Carthy recorded it on the Topic label but I do not know the album title although it may be: Crown of Horn I think the author was Leon Rosselson and other performers may have recorded it I will try to find out.

The chorus (relating to children born to a better life than those of Aberfan) goes thus:

Buttons would be pressed. Rules would be broken. Strings would be pulled - and magic words spoken. Invisible fingers would mold - Palaces of gold.

Good hunting.

Dave