Shafts	Index	Shafts

Geology encountered   Thickness   Depth   ft. in.   ft. in. Settle boards raised    3  0     3  0 Sunk in clay    9  0     12  0 Sand and water    30  0     42  0 Swelling leafy clay    9  0     51  0 Strong clay    9  0     60  0 Ramble, mixed with clay    3  0     63  0 Blue ramble    3  0     66  0 COAL    0  4     66  4 Thill    0  5     66  9 Blue girdles, all timbered from the surface    7  6     74  3 Grey post    6  9     81  0 Blue stone    6  0     87  0 COAL    2  9     89  9 Grey and brown metal stone    6  0     95  9 Grey post girdle, where the water went away    1  0     96  9 Grey and black metal    7  0     103  9 COAL, with water    0  6     104  3 Grey metal    4  0     108  3 Brown and grey post, with water    36  0     144  3 Black and grey post girdle    3  6     147  9 Grey metal    1  0     148  9 COAL, with water    2  0     150  9 Grey metal or thill    1  0     151  9

Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume C-E, published by the North of England Institute of Mining & Mechanical Engineers, 1881

  original entry for sinking/boring number 0578 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume C-E, published by the North of England Institute of Mining & Mechanical Engineers, 1881"

  original entry for sinking/boring number 0579 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume C-E, published by the North of England Institute of Mining & Mechanical Engineers, 1881"

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