Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Increasing application Imperial smelting process
Full title - Increasing application of the Imperial Smelting Process. 8 pages with 6 black & white photos. Contains developments and improvements of the process. Reprinted from Mining Magazine, May 1964.
Pwnc
Diwydiant
Rhif yr Eitem
1992.338
Mesuriadau
Meithder
(mm): 295
Lled
(mm): 220
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.