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| An Account of the Strata of Northumberland and Durham | Volume: A-B, Page: 188 |
No. 252 — Boldon
Township of Boldon, Durham
Sheet of 19thC Ordnance Map. Lat. , Long. .
Account of the Boring at the intended New Winning near Boldon, October 4th, 1839
Approximate surface level feet above sea (Ordnance datum)
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| Source: | An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume A-B, published by the North of England Institute of Mining & Mechanical Engineers, 1878 |
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