Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
East Moors Works furnace burden data
Single page, typed in black ink on cream paper. Blast furnace burdens for basic and hematite iron (not dated)
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.