Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Code of Shaft Signals, notice
Notice bearing Code of Shaft Signals showing the number of 'knocks' that were to be used when descending and ascending the shaft.
Pwnc
Diwydiant
Rhif yr Eitem
2017.35
Mesuriadau
Meithder
(mm): 425
Lled
(mm): 250
Uchder
(mm): 2
Dosbarth
health and safetyNid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.