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No. 2,440 — Black HillTownship of Benfieldside, Durham Sheet 11 of 19thC Ordnance Map. Lat. 54° 51' 42", Long. 1° 49' 29". [ OS Grid Ref: NZ 11250 51900 (411250,551900) ] Section of Strata bored through between the Busty and Three-Quarter Seams, in Old Lizzie Way, near Stable Dyke, Black Hill Drift, Consett Collieries. August, 1894 Approximate surface level 669.15 feet above sea (Ordnance datum)
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