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No. 3,040 — WalltownTownship of Walltown, Northumberland Sheet 83 of 19thC Ordnance Map. Lat. 55° 00' 37", Long. 2° 27' 43". [ OS Grid Ref: NY 70461 68518 (370461,568518) ] Account of Strata passed through in a Bore-hole at High Tippald, 1901 Approximate surface level 658 feet above sea (Ordnance datum)
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