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Amgueddfa Cymru – Museum Wales
Four page typed manuscript on North Wales slate quarries with particular reference to Moelferna Quarry, by J. Evans, former quarry manager, 1980.
2006.32/146 (1) - Full title - Local Quarry. Background & General Working Scheme. Moelferna Quarry - Glyndyfrdwy. Three pages typed in black on green paper. Stapled top left. 2006.32/146 (2) - Full title - Slate Quarries - North Wales. One pages typed in black on both sides of green sheet of paper.
