Shafts	Index	Shafts

Geology encountered   Thickness   Depth   ft. in.   ft. in. Depth from surface to bottom of Main Coal Seam    201  0     201  0 Soft grey metal    1  6     202  6 Strong grey metal stone, with hard girdles or lumps    45  6     248  0 White and grey metal    1  3     249  3 Strong grey metal stone    3  9     253  0 Black metal with scares of coal    0  6     253  6 Strong grey metal stone, with girdles    12  6     266  0 White post, with a great feeder of water at top    11  6     277  6 Whin    1  0     278  6 White post and whin mixture    1  0     279  6 White post    16  6     296  0 COAL    3  6     299  6     COAL, with water    2  11            COAL, splinty    0  7        Grey metal, into    0  10     300  4

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 3009 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"