Shafts	Index	Shafts

Geology encountered   Thickness   Depth   ft. in.   ft. in. Soil and clay    24  0     24  0 COAL    2  1     26  1 Broken post and whin    31  0     57  1 Grey post    42  0     99  1 Strong post, with whin clyers    54  0     153  1 COAL - Shield Row Seam    9  0     162  1 Strong post thill    18  0     180  1 Green post    30  0     210  1 Grey post    24  0     234  1 COAL - Foot Coal Seam    1  2     235  3 Blue metal stone    2  6     237  9 COAL - Hard Coal Seam    4  6     242  3 Thill    3  0     245  3 Green post    27  0     272  3 Soft jointy black stone    6  0     278  3 COAL - Brass Thill Seam    5  3     283  6 Grey thill    8  3     291  9 White post    12  0     303  9 Black stone    2  3     306  0 Platy post    40  6     346  6 Main post    54  0     400  6 Black stone    6  0     406  6 Green post    42  0     448  6 Grey stone    12  0     460  6 COAL - Hutton Seam    6  4     466  10

Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume A-B, published by the North of England Institute of Mining & Mechanical Engineers, 1878

  original entry for sinking/boring number 0346 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume A-B, published by the North of England Institute of Mining & Mechanical Engineers, 1878"

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