Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Support of the Roof at the Coal Face (booklet)
National Coal Board Training Manual No.2. 36 page booklet in red covers.
Pwnc
Diwydiant
Rhif yr Eitem
2001.1/874
Mesuriadau
Meithder
(mm): 222
Lled
(mm): 140
Uchder
(mm): 7
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.