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No. 1,107 — HeddonTownship of Heddon-on-the-Wall, Northumberland Sheet 96 of 19thC Ordnance Map. Lat. 54° 59' 27", Long. 1° 46' 54". [ OS Grid Ref: NZ 13968 66279 (413968,566279) ] Bored in the Richard Pit, at Heddon, from the Thill of the Main Coal. April 3rd, 1764 Approximate surface level 150 feet above sea (Ordnance datum)
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