Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Blaenavon: Big Pit Coal Degradation Survey (report)
National Coal Board Scientific Department report written following an ''investigation into the amount of large coal degradation occuring at transfer and loading points underground and at surface screens at Big Pit''. Dated September 1960. 8 page report with two pull out plans. Grey covers with blue spine.
Pwnc
Diwydiant
Rhif yr Eitem
2001.1/692
Mesuriadau
Meithder
(mm): 334
Lled
(mm): 210
Uchder
(mm): 5
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.