Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Lewis Merthyr Colliery, film negative
Black and white film negative showing text discussing the 'breakdown of ventilation', photographed from a publication.
Pwnc
Diwydiant
Rhif yr Eitem
2009.3/2691
Mesuriadau
Meithder
(mm): 62
Lled
(mm): 61
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.