Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Gwscwm Colliery, plan
A plan of the ventilation system at Gwscwm Colliery. Scale 2 chains to an inch.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
A plan of the ventilation system at Gwscwm Colliery. Scale 2 chains to an inch.