Shafts	Index	Shafts

Geology encountered   Thickness   Depth   ft. in.   ft. in. Yellow clay    11  0     11  0 Fine blue clay    85  0     96  0 Strong clay    7  0     103  0 Dry sand    3  0     106  0 Small gravel    3  0     109  0 Dry sand    1  0     110  0 Gravel, with water    29  0     139  0 Tumbling stones and gravel    3  0     142  0 Broken post stone    9  0     151  0 COAL - Low Main Seam    1  3     152  3 Blue metal, with thin post girdles    30  6     182  9 White post, with thin girdles    18  9     201  6 Blue metal, with post girdles    11  6     213  0 COAL - Hutton Seam    4  2     217  2

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 1502 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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