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Markham Steam Coal Company

The company that bought the land at Markham in the Sirhowy Valley and held the leases of about 1,400 acres of coal between the Tredegar and Oakdale properties. The Tredegar Iron and Coal Company had acquired its whole interest by 1915.

Mines operated

MineRegionYears
Markham Colliery, Sirhowy Valley Caerphilly 1910–1915

Record created: 8 October 2026 · Last researched: 8 October 2026

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