Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mining Technology (journal)
Journal of The Institution of Mining Electrical and Mechanical Engineers Vol.69 January 1987
Pwnc
Diwydiant
Rhif yr Eitem
90.46I/1
Mesuriadau
Meithder
(mm): 297
Lled
(mm): 212
Dosbarth
mineral/rock extractionNid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.