Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Bedwas Colliery, plan
Bedwas Colliery, Caerphilly, plan of workings in the Big Vein up to 1966, Scale 1/2500, 20 October 1970.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Bedwas Colliery, Caerphilly, plan of workings in the Big Vein up to 1966, Scale 1/2500, 20 October 1970.