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R. Harris

Owner of Clwydyfagwr Colliery, Merthyr Tydfil, from 1907, succeeding John Harris.

Mines operated

MineRegionYears
Clwydyfagwr Colliery Merthyr Tydfil 1907–1919

Record created: 16 September 2026 · Last researched: 16 September 2026

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