Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Ebbw Vale Works, test report sheet
Four pages stapled together. Typed in black ink on cream paper. Results of tests carried out on Becker Coke Ash sampled on the 28th July, 1st September, 29th September, and 30th November 1956.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.