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No. 560 — CornforthTownship of Cornforth, Durham Sheet 35 of 19thC Ordnance Map. Lat. 54° 42' 58", Long. 1° 30' 12". [ OS Grid Ref: NZ 31992 35803 (431992,535803) ] Account of the 2nd Borehole at Cornforth Grange, about half way from the 1st, towards Blackgate. February 21, 1835 Approximate surface level 335 feet above sea (Ordnance datum)
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