Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
National Coal Board, press release
Press release relating to the Tredeg opencast site, Powys. Dated 13 July 1978. One page.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Press release relating to the Tredeg opencast site, Powys. Dated 13 July 1978. One page.