Hand wheel at Esgairfoelirin larger quarry
View of the slate waste tips at Abellefenni quarry
A view from Rhiwgreiddyn quarry to the village...
Workers at Aberllefenni quarry, last week of...
Aberllefenni quarry, December 2003
'The Carved Slates of Dyffryn Ogwen 1830...
Photocopy of rubbing of carved slate
Untitled by Gee Williams
Slate sample
Llangynog Slate Quarry c1921
Llanfair Slate Yard c1905
Slate door stop
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