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No. 188 — BirkshawTownship of Thorngrafton, Northumberland Sheet 92 of 19thC Ordnance Map. Lat. 54° 59' 01", Long. 2° 21' 10". [ OS Grid Ref: NY 77426 65511 (377426,565511) ] Section of Strata in Mr. Addson's Pit Shaft (Birkshaw Colliery) near Bardon Mill and Thorngrafton Approximate surface level 515 feet above sea (Ordnance datum) Nearby BoringsImmediate Vicinity
Borings within a 2½ miles (4km) radiusIn the following table the value given for the distance (miles/kilometres) are "as the crow flies" and are provided as an indication only.
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