Shafts	Index	Shafts

Geology encountered   Thickness   Depth   m.   m. Outset    4.57     4.57 Soil    0.30     4.88 Yellow clay    0.30     5.18 Blue clay    3.96     9.14 Blue clay, mixed with stones    17.27     26.41 Gravel    1.83     28.24 Fine blue clay    3.66     31.90 Freestone, with water    16.64     48.54 Blue stone    3.20     51.74 White post, with water    5.66     57.40 Blue stone    15.34     72.74 COAL - Three-Quarter Seam    0.61     73.35 Black stone    5.59     78.94 COAL - Five-Quarter Seam    1.02     79.96 Thill stone    0.76     80.72 Grey metal stone, with water    19.71     100.43 White post, with water    0.91     101.34 Grey metal stone    1.83     103.17 COAL - Main Coal Seam    1.32     104.49 Thill stone    0.46     104.95 Blue stone    2.44     107.39 White post    0.61     108.00 Blue stone    4.78     112.77 Blue stone    6.81     119.58 COAL - Maudlin Seam    1.07     120.65     COAL or black stone    1.07      Grey stone    4.11     124.76 White post, with water    26.52     151.28 Grey metal stone, with post girdles    2.59     153.87 COAL - Low Main Seam    0.41     154.27 White post    3.66     157.93 Grey metal stone, with post girdles    5.94     163.87 COAL - Brass Thill Seam    0.43     164.31     COAL    0.25          COAL, splint    0.18      Grey metal stone    1.83     166.13 COAL    0.20     166.34 Post, with girdles of blue stone    10.97     177.31 COAL - Hutton Seam    1.73     179.04     COAL, good    1.37          COAL, bottom    0.36

Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume L-R, published by the North of England Institute of Mining & Mechanical Engineers, 1887

  original entry for sinking/boring number 1299 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume L-R, published by the North of England Institute of Mining & Mechanical Engineers, 1887"

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