Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Plan
Plan of Graigola seam at Graig Merthyr and Clydach Merthyr Collieries, N.C.B. West Wales Area, not dated Scale : 6" to 1 mile
Pwnc
Diwydiant
Rhif yr Eitem
87.243I/113
Derbyniad
Collected officially, 31/12/1987
Mesuriadau
Meithder
(mm): 760
Lled
(mm): 815
Techneg
dyeline
Deunydd
papur
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.