Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Map
Map of watercourses and pumping particulars for Blaenavon group of pits including Varteg Hill, Cwmsychan, Big Pit, Llanerch, Greenland Pit, Gwenallt, Blaenserchan, Gdynos and Garn Collieries Scale : 6" to 1 mile
Pwnc
Diwydiant
Rhif yr Eitem
87.243I/80
Derbyniad
Collected officially, 31/12/1987
Mesuriadau
Meithder
(mm): 762
Lled
(mm): 1266
Deunydd
paper (tracing)
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.