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No. 2,504 — ButterknowleTownship of Lynesack and Softley, Durham Sheet 41 of 19thC Ordnance Map. Lat. 54° 37' 22", Long. 1° 49' 49". [ OS Grid Ref: NZ 10957 25318 (410957,525318) ] Account of Strata sunk through in a Staple situated 48 feet to North North-east of the William Pit, February, 1906, to prove the Harvey of Yard Seam shown as 8 feet from the surface in the account of the William Pit Sinking, No. 379 Approximate surface level 632.30 feet above sea (Ordnance datum)
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