Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Oakeley slate quarry, photograph
Two workmen working on the channelling machine for Slate at Oakeley Slate Quarry.
The work of a channelling machine. A series of holes are bored close together through the thickness of the block it is desired to remove. When the partitions between the holes are removed by a cutting tool there is a deep channel seperating a lower block from the slate that is still in position.
Pwnc
Diwydiant
Rhif yr Eitem
52.465/7
Derbyniad
Donation
Mesuriadau
Meithder
(mm): 251
Lled
(mm): 300
Techneg
black and white (monochrome photograph)
photograph
Deunydd
papur
Lleoliad
In store
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