Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
National Coal Board, press release
Press release relating to trials in the West Wales Area of the 'world's first automatic dust suppression system for coal ploughing'. Dated 19 May 1971. Two pages, stapled.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.