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CLOGAU SLATE QUARRY

VIVIAN SLATE QUARRY

ESGAIRCEILIOG SLATE QUARRIES

VIVIAN SLATE QUARRY

VIVIAN SLATE QUARRY

BRONFLOYD LEAD MINE;BRYN LLWYD

RHIW-BACH SLATE QUARRY

MINERA LEAD MINES: MEADOW SHAFT LEAD MINE;CITY...

DINORWIC SLATE QUARRY

GLOGFACH MINE;LISBURNE LEAD & SILVER MINES

ABERLLEFENNI SLATE QUARRY

RATGOED SLATE QUARRIES

CWM Y LLAN SLATE QUARRY

VIVIAN SLATE QUARRY

ABERLLEFENNI SLATE QUARRY

ESGAIRMWYN LEAD MINE, MINE WORKINGS COMPLEX

ESGAIRMWYN LEAD MINE, MINE WORKINGS COMPLEX

ESGAIR LLE;ESGAIR LLU LEAD MINE;GREAT WEST VAN...

DINORWIC SLATE QUARRY WORKSHOPS;WELSH SLATE...

RATGOED SLATE QUARRIES

ABERLLEFENNI SLATE QUARRY

POWELL'S LLYWERNOG MINE, PONTERWYD

MINERA LEAD MINES: MEADOW SHAFT LEAD MINE;CITY...

CWMRHEIDOL MINE; LEVEL FAWR LEAD MINE, CWMRHEIDOL

VIVIAN SLATE QUARRY

LLANNERCH-Y-MOR LEAD SMELTING WORKS;NORTH...

BRYN-YR-ARIAN LEAD MINE [DISUSED], SE OF TRE&...

BRONFLOYD LEAD MINE;BRYN LLWYD

BRYNDYFI LEAD MINE; NEUADD LWYD LEAD MINE,...

VIVIAN SLATE QUARRY