Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
East Moors Works, report
Typed in black ink on cream paper. Title: 'No.1 blast furnace gas analyses on slack blast; furnace filled with limestone charge with separately.'
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.