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Thomas' Merthyr Colliery Company

The company that owned Mountain Colliery and the nearby Brug Colliery, Merthyr Tydfil, by 1927, managed by John Davies.

Mines operated

MineRegionYears
Mountain Colliery Merthyr Tydfil 1927–?

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

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