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Ynysamman Colliery Company

The company of Pontardawe that worked the Ynysamman anthracite level near Brynamman, Carmarthenshire, between 1909 and 1914.

Mines operated

MineRegionYears
Ynysamman Colliery Carmarthenshire 1909–1914

Record created: 15 September 2026 · Last researched: 15 September 2026

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