Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Hook Colliery, plan
Plan: Hook Colliery, workings in rock, Tumblin and Timber Seams. 2 chs: 1" Not dated.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Plan: Hook Colliery, workings in rock, Tumblin and Timber Seams. 2 chs: 1" Not dated.