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 Shafts  Index  Shafts 

Middridge Colliery

Charles Pit

Strata sunk through in the Charles Pit, at Middridge Colliery, and situate near to Middridge Village, about one mile from Shildon, in an Easterly diection

Shaft Details

Approximate surface level 400 feet above sea (Ordnance datum)





























































































Geology encountered   Thickness   Depth
  ft. in.   ft. in.
Outset    12  0     12  0
Soil and gravel    12  0     24  0
Limestone    114  0     138  0
Yellow post    48  0     186  0
Grey post    2  0     188  0
COAL    2  4     190  4
Seggar    1  6     191  10
Blue metal    36  0     227  10
Supposed top and bottom Busty Seams    0  0     227  10
    COAL    3  3     236  4
    Seggar    2  0     236  4
    COAL    3  3     236  4
Sinking:—    0  0     236  4
Seggar-clay    2  0     238  4
Light brown post    52  0     290  4
COAL    0  3     290  7
White post    12  0     302  7
COAL    0  6     303  1
Fire-clay    4  0     307  1
Blue metal    3  4     310  5
COAL    0  8     311  1
Coarse fire-clay    3  0     314  1
Post girdle    1  0     315  1
Blue metal    20  0     335  1
Very strong white post    31  2     366  4
Grey post, with partings    13  6     379  10
Blue metal, with girdles    4  0     383  10
COAL - Brockwell Seam    5  6     389  4
Bored further:—    0  0     389  4
Seggar-clay    4  0     393  4
Grey post    3  5     396  9
Hard white post, with water    5  6     402  3
Blue metal    8  6     410  9
Grey metal    19  8     430  5
Grey and white post    13  2     443  7
Grey metal    5  0     448  7
Blue metal    6  1     454  8
Seggar-clay    4  2     458  10
Blue metal, with post and ironstone girdles    4  1     462  11
Grey metal    16  10     479  9
Blue and black shale    0  9     480  6
COAL    0  3     480  9
Grey sandstone    1  3     482  0
White post    1  2     483  2
Grey metal, with post girdles    4  6     487  8
Blue metal    5  7     493  3
White post    0  6     493  9
Blue metal    0  10     494  7
White post    0  7     495  2
Blue metal    0  4     495  6
Sandstone    2  11     498  5
Blue metal, with post girdles    8  10     507  3
Strong white post    14  2     521  5
Blue metal, with post girdles    4  3     525  8
Sandstone    1  0     526  8
Blue metal    0  10     527  6
White post    1  11     529  5
Grey post    2  4     531  9
Hard grey post    1  1     532  11
Blue whin    0  10     533  9
Grey post    0  6     534  3
White post    3  4     537  7
Blue metal    0  4     537  11
White post    3  7     541  6
Grey post    2  2     543  8
White post    2  7     546  3
Blue whin    0  8     546  11
White post    3  4     550  3
Blue metal    0  2     550  5
White post    0  4     550  9
Blue metal    0  2     550  11
White post    0  8     551  7
Grey metal    5  4     556  11
Black shale    0  2     557  1
Grey metal    4  4     561  5
Blue metal    1  10     563  3
COAL    0  7     563  10
    COAL    0  2     563  10
    Stone band    0       563  10
    COAL    0       563  10
White post    0  4     564  2
Grey metal    1  2     565  4
COAL    0  3     565  7
Blue metal    1  1     566  8
White post    0  10     567  6
Blue metal, with post panels    0  7     568  1
White post    0  3     568  4
Blue metal    0  5     568  9
White post    17  8     586  5
Blue metal    1  0     587  5
White post    1  4     588  9
White post, mixed with whin    1  5     590  2

Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume L-R, published by the North of England Institute of Mining & Mechanical Engineers, 1887

  original entry for sinking/boring number 1357 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume L-R, published by the North of England Institute of Mining & Mechanical Engineers, 1887"

  original entry for sinking/boring number 2852 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume L-R, published by the North of England Institute of Mining & Mechanical Engineers, 1887"

  main page for Middridge Colliery

 


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