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No. 366 — ButterknowleTownship of Lynesack and Softley, Durham Sheet 41 of 19thC Ordnance Map. Lat. 54° 37' 38", Long. 1° 49' 20". [ OS Grid Ref: NZ 11476 25814 (411476,525814) ] Account of No. 12 Hole, bored about 46 yards to the North of the 1st Hole. July 23rd, 1829 Approximate surface level 640 feet above sea (Ordnance datum)
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