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No. 1,692 — Seaton DelavalTownship of Seaton Delaval, Northumberland Sheet 81 of 19thC Ordnance Map. Lat. 55° 04' 49", Long. 1° 31' 51". [ OS Grid Ref: NZ 29949 76310 (429949,576310) ] Boring made from the bottom of the B Pit, below the Low Main Seam, begun May 1st, and finished July 4th, 1845 Approximate surface level 118 feet above sea (Ordnance datum)
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