Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Cwmystwyth Mines Ltd., plan
Cwmystwyth Mines Ltd., Devil's Bridge, two blueprints of concrete beds for ore breakers and crushers; Stock & Co Engineers Manchester 1912 & 1916
Pwnc
Diwydiant
Rhif yr Eitem
87.249I/77
Derbyniad
collected officially, 31/12/1987
Mesuriadau
Meithder
(mm): 760
Lled
(mm): 755
Techneg
Blueprint
Deunydd
Canvas
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.