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The company that owned Blackett Colliery at Melkridge, near Haltwhistle, in the 1880s; recorded as Blackett Colliery Co Ltd in 1886.
| Mine | Region | Years |
|---|---|---|
| Blackett Colliery | Northumberland | 1880–1889 |
Record created: 7 October 2026 · Last researched: 7 October 2026
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