Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Trelewis drift mine, photograph
Controlled flooding of Trelewis Drift Mine during closing down procedure. View showing dam wall at entrance of drift side. The square structure is a fan to evacuate air build up behind dam forced up by rising water. This area had to be monitored for build up of black damp etc. Ink stamp on reverse with date and inscription.
Pwnc
Diwydiant
Rhif yr Eitem
2004.66/15
Derbyniad
Donation, 27/5/2004
Mesuriadau
Meithder
(mm): 218
Lled
(mm): 166
Techneg
black and white (monochrome photograph)
photograph
Deunydd
papur
Lleoliad
In store
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