Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Dowty Mining Equipment Limited (booklet)
12 pages : 6 black & white photos Content summary : Information on Dowty arch pre-loading and silting system.
Pwnc
Diwydiant
Rhif yr Eitem
1992.336/3
Mesuriadau
Meithder
(mm): 295
Lled
(mm): 230
Dosbarth
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