Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Development of the Iron Ore and Coal Seams in the Rhymney Valley (article)
20 page article and a plan of Rhymney, scale 6 inches to 1 mile, showing the various seams in the area.
Pwnc
Diwydiant
Rhif yr Eitem
2017.38/577
Mesuriadau
Meithder
(mm): 255
Lled
(mm): 204
unfolded
(mm): 660
unfolded
(mm): 485
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.