Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Collection of tech. drawings re colliery equipment
Engineering Drawing Tracing, list of Rollers and Sheaves in use at Raglan Colliery, 1925 Scale : 3 in to 1 ft and 1 in to 1 ft
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.