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The firm recorded as owner of Gordon House Colliery, Cockfield, in the 1860s, continued as W. H. Hedley & Co. into the 1880s.
| Mine | Region | Years |
|---|---|---|
| Gordon House Colliery | County Durham | 1863–1888 |
Record created: 6 October 2026 · Last researched: 6 October 2026
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