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No. 2,733 — HaltwhistleTownship of Haltwhistle, Northumberland Sheet 92 of 19thC Ordnance Map. Lat. 54° 58' 36", Long. 2° 27' 22". [ OS Grid Ref: NY 70809 64776 (370809,564776) ] Account of Strata passed through in South Tyne Colliery Level, measured from the plotted Section, February 12th, 1874 Approximate surface level 420 feet above sea (Ordnance datum)
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