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No. 992 — Grey MareTownship of Whittonstall, Northumberland Sheet 104 of 19thC Ordnance Map. Lat. 54° 53' 39", Long. 1° 56' 07". [ OS Grid Ref: NZ 04151 55503 (404151,555503) ] Bored in the second place at Grey Mare, about 100 yards to the South from the first. July 5th, 1756 Approximate surface level 875 feet above sea (Ordnance datum)
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