Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Oakeley slate quarry, photograph
Two workmen using the 'jumper' for drilling pillaring holes. Drilling a hole along the line of cleavage prior to the insertion of a charge of gunpowder to split the rock.
Pwnc
Diwydiant
Rhif yr Eitem
52.465/12
Derbyniad
Donation
Mesuriadau
Meithder
(mm): 251
Lled
(mm): 300
Techneg
black and white (monochrome photograph)
photograph
Deunydd
papur
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.