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No. 1,074 — HartonTownship of Harton, Durham Sheet 4 of 19thC Ordnance Map. Lat. 54° 58' 09½", Long. 1° 26' 28". [ OS Grid Ref: NZ 35775 64020 (435775,564020) ] Strata bored through in the Green Lane, 12 chains to West of Boldon Turnpike, in the property of the Dean and Chapter of Durham, and within a few yards of the Copyhold Estate of Chas. Milner, Esq., of Biddick, Harton Estate. No. 1 Hole. Commenced 7th March, 1836 Approximate surface level 75 feet above sea (Ordnance datum)
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