Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Pit Ventilation (booklet)
35 page booklet stapled at centre. Published by the Industrial Training Branch of the National Coal Board 1950. Revised 1972, Revised 1981.
Pwnc
Diwydiant
Rhif yr Eitem
2001.1/484
Creu/Cynhyrchu
National Coal Board Training Branch
Dyddiad: 1981
Derbyniad
Donation, 1/2/2001
Mesuriadau
Meithder
(mm): 152
Lled
(mm): 203
Deunydd
papur
metel
Lleoliad
In store
Dosbarth
ventilationNid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.