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Pen-yr-Orsedd Slate Quarry, Nantlle Valley

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Oblique aerial photograph of Pen yr Orsedd slate quarry taken during the Royal Commission

Oblique aerial photograph of Pen-yr-Orsedd slate quarry taken from the south east during the Royal Commission

Compressed air tank

Front view of compressor

Rear view of drive wheels

Company illustration, cross sections of drill

Complete drill

Right side view of compressor

Detail of surviving blondin (Aug 2013)

View of surviving blondin (Aug 2013)

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Henebion Cymru

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Historical Monuments of Wales

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