Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Technical drawing
Engineering drawing showing road head with rippings up to coal face by use of false leg arches, National Coal Board S.W. Division.
Pwnc
Diwydiant
Rhif yr Eitem
87.243I/81
Mesuriadau
Meithder
(mm): 426
Lled
(mm): 491
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.