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Harris's Navigation Steam Coal Company

Founded by Frederick W. Harris; sank and originally operated the colliery from 1872, giving its name to the village of Treharris.

Mines operated

MineRegionYears
Deep Navigation Colliery Merthyr Tydfil 1872–1893

Record created: 27 August 2026 · Last researched: 27 August 2026

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