Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Hook Colliery, plan
Plan: Hook Colliery, workings in Rock, Tumblin and low seams. Correct to April 1936.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Plan: Hook Colliery, workings in Rock, Tumblin and low seams. Correct to April 1936.