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PFA - Penrhyn Castle Further Additional
6 - Maps and plans
6 - Engineering Plans
Rhif Cyf Amg
PFA/6/325
Teitl
Plan of the Penrhyn slate quarry
Disgrifiad
Showing the proposed new workings to the Ogwen by J.Wyatt. Paper, coloured, scale 1 in : 400 feet.
Dyddiad
1872
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