Shafts	Index	Shafts

Geology encountered   Thickness   Depth   ft. in.   ft. in. From the top of walling to soil    7  0     7  0 Soil    1  0     8  0 Blue clay and little sand    25  2     33  2 Freestone, gullety, with a good feeder of water    16  3     49  5 Dark blue stone    36  0     85  5 COAL - Main Coal Seam    3  0     88  5     COAL*    3  0     88  5 Thill    5  9     94  2 COAL, coarse (level taken up in old seam to cut the bottom of the coal in East Pit)    1  4     95  6 Thill    5  9     101  3 White post    3  6     104  9 Soft dark blue stone    2  0     106  9 COAL, good in quality    1  8     108  5 Thill    3  6     111  11 Blue stone    4  0     115  11 Ironstone bed    1  0     116  11 Blue stone, mixed with iron girdles    3  0     119  11 Blue stone, with a good feeder of water    4  0     123  11 * N.B. - The Main Coal in West Pit was 7 feet thick.    0  0     123  11

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 0665 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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