Shafts	Index	Shafts

Geology encountered   Thickness   Depth   ft. in.   ft. in. Rowton Well Sill    24  0     24  0 Plate    12  0     36  0 Slate sill    11  0     47  0 Plate    32  6     79  6 White hazle    6  0     85  6 Plate, with metal post    25  0     110  6 Whin sill    2  0     112  6 Slate sill    29  0     141  6 Plate, with metal post    53  6     195  0 Fell Top Limestone    5  0     200  0 COAL    1  0     201  0 Girdle beds    12  0     213  0 Plate    7  9     220  9 Hipple Sill    30  0     250  9 Plate    19  0     269  9 High Grit Sill (lead bearing)    109  0     378  9 Black bed and plate    4  0     382  9 Low Grit Sill (lead bearing)    100  0     482  9 Plate    1  6     484  3 Limestone and coal    4  0     488  3 Crag Sill (lead bearing)    36  0     524  3 Plate    8  0     532  3 Limestone    4  0     536  3 Pattinson's Sill    17  0     553  3

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 2790 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"

  main page for Derwent Mines (Lead Ore)