Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
N.C.B. safety poster "Effect of Carbon Monoxide"
Black and white grid showing how long it would take to die with different percentages of Carbon monoxide.
Pwnc
Diwydiant
Rhif yr Eitem
1993.108/1
Creu/Cynhyrchu
National Coal Board
Dyddiad: 1970s-1980s
Derbyniad
Collected officially, 17/2/1993
Mesuriadau
Meithder
(mm): 295
Lled
(mm): 420
Deunydd
papur
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.