Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Bergleau Museum, Bochum, Photograph
Mining, model illustrating shaft boring, shows iron cutting shoes topped by a cement ring and brock walls, to cut through wet ground by weighting the top of the caisson.
Pwnc
Diwydiant
Rhif yr Eitem
62.140/17
Derbyniad
Collected officially, 4/5/1962
Mesuriadau
Meithder
(mm): 143
Lled
(mm): 104
Techneg
black and white (monochrome photograph)
photograph
Deunydd
papur
Lleoliad
In store
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