Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
National Coal Board, press release
Press release relating to record productivity rates at Marine Colliery, Ebbw Vale. Dated 4 May 1976. Two pages, stapled.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.