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    View of Maenofferen slate quarry, commissioned by Oakley Slate quarries Co. Ltd.. Oblique aerial photograph, 5?" cut roll film.Further Information
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    NPRN400427TitleMaenofferen Slate Mine, Blaenau Ffestiniog (Maen-Offeren; Maen y Fferem; Maen Offeren)Type Of SiteSLATE QUARRYCollections144Images135