Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
National Coal Board, plan
Plan 'N.C.B. down-cast shaft winders - layout of equipment on winder floor, 1963'. Print of original plan coated in plastic, Drg.No.58308/83.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.