Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
East Moors works blast furnace department, notes
Single page, typed in black ink on cream paper. Procedure with only No.2 furnace in blast to change either tuyere or monkey.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.