I have just learned that tha visitor centre at Ogwen Cottage is on the site of 'Old Hawn' stone quarry - mentioned on their web site:
http://ogwen.co.uk/snowdonia/
And was used to make produced writing slates used in schools. Anyone idea what sort of stone was used for these 'slates'? Was it low quality slate or something else entirely?
There is no mention in AJ Richard's Gazetteer of the Welsh Slate Industry.
It appears in the Home Office List of Quarries 1895–1897 as:
1895 Owner or Operator: Thomas & Nephew
1895–1897 Agent: Thomas, W E
1896–1897 Owner or Operator: Thomas, W E
RCAHMW Coflein record it as Pen-y-benglog slate quarry but give no further details.
A J Richard records it as Idwal quarry (2nd ed. p. 30) and describes it as a hone quarry. I suspect that 'hawn' is someone hearing it so described and making a guess at the spelling.
I'm not sure where the information "this quarry produced writing slates used in schools in the last century and exported worldwide" comes from.
Dave