Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
East Moors Works, report
Two pages stapled together. Typed in black ink on cream paper. "Laboratory & service tests on 25% Bent's fireclay (United Fireclay products) - 75% Dowlais fireclay in No.1 blast furnace."
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.