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Amgueddfa Cymru – Museum Wales
Plan of Llanberis (Dinorwic) Slate Quarry Museum Elevations. Sheet 6 of 7 Date of Survey July 1976, Surveyed by Plowman Craven & Associates on behalf of Central Survey DCED. Survey Job No. 24694. Drawn by POA, Checked FJT. Scale 1:100.
