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No. 2,007 — ThrockleyTownship of Throckley, Northumberland Sheet 87 of 19thC Ordnance Map. Lat. 54° 59' 49", Long. 1° 45' 59". [ OS Grid Ref: NZ 14943 66962 (414943,566962) ] Account of the Boring in the Chance Pit, at Throckley, from the Engine Seam. May 24th, 1756 Approximate surface level 350 feet above sea (Ordnance datum)
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