Shafts	Index	Shafts

Geology encountered   Thickness   Depth   ft. in.   ft. in. Clay    24  0     24  0 Blue metal    9  0     33  0 Red freestone    12  0     45  0 Black thill-stone    4  0     49  0 White freestone    9  0     58  0 Blue metal    12  0     70  0 Grey whin    4  0     74  0 Grey beddy freestone    15  0     89  0 Blue metal    18  0     107  0 Grey whin    2  0     109  0 Blue metal    7  0     116  0 COAL    2  0     118  0

Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Supplement, published by the North of England Institute of Mining & Mechanical Engineers, 1910

  original entry for sinking/boring number 2528 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Supplement, published by the North of England Institute of Mining & Mechanical Engineers, 1910"

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