Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Brynna Colliery, plan
Plan and section of Brynna Colliery workings, 1936 Section scale : 1" to 60' Plan scale : 1" to 60'
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Plan and section of Brynna Colliery workings, 1936 Section scale : 1" to 60' Plan scale : 1" to 60'