Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
East Moors Works, blast furnace report
Typed in black ink on cream paper. Three pages stapled in top left corner. "Research on blast furance tap hole clays." Dated 12/7/49.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.