Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
East Moors works blast furnace dep, correspondence
Typed in black ink on green paper. Letter from J.C. Hayman, refractories technologist re. the grading of blast furnace taphole clay. Dated 8th March, 1950.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.