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| | Durham Mining Museum - Further Research |
 | | Ref: D/X 411/275 — 'Flooded Colliery, why Castle Eden Pitt closed in 1893, Disaster after Strike', (annotated by Ralph Lee as a copy of an undated cutting from the Northern Echo), not dated |
 | | Ref: D/X 411/276 — A page with a fl and white photograph of Tippler House, Blackhall, and on the reverse a fl and white photograph of the new Castle Eden Colliery, in course of development, not dated (20th century) |
 | | Draft agreement for (1) to supply to (2) water from limestone at Castle Eden Colliery, from pumping station at Hesleden Dene and from water main at Horden. |
| www.dmm.org.uk /ro-coll/c001.htm (500 words) |
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