Shafts	Index	Shafts

Geology encountered   Thickness   Depth   ft. in.   ft. in. Strong clay mixed with soil    22  0     22  0 Sand and gravel (200 gallons of water per hour)    2  0     24  0 Black stone and coal    3  0     27  0 Seggar clay    6  0     33  0 Strong grey metal    26  0     59  0 White post    10  0     69  0 COAL - Five-Quarter Seam    2  1     71  1     COAL, good    2  1        Seggar clay    8  0     79  1 Strong grey metal, mixed with iron girdles    26  0     105  1 COAL    0  8     105  9 Soft thill stone    5  10     111  7 COAL, with stone band    1  6     113  1 Strong grey metal    4  7     117  8 White post    37  6     155  2 COAL - Main Coal Seam    4  9     159  11     COAL, good    3  4            Splint    1  5

Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume S-T, published by the North of England Institute of Mining & Mechanical Engineers, 1894

  original entry for sinking/boring number 1638 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume S-T, published by the North of England Institute of Mining & Mechanical Engineers, 1894"

  main page for Sacriston Colliery