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 Shafts  Index  Shafts 

Seaton Colliery

Union Pit

Section of Strata sunk through in the Union Pit, Seaham and Seaton Collieries. July 31st, 1844.

Shaft Details

Sunk: 31 Jul 1844, Closed: 1988

Approximate surface level 230 feet above sea (Ordnance datum)

Switch to measurements in:  fathoms, feet & inches, or metres




































































































































































Geology encountered   Thickness   Depth
  ft. in.   ft. in.
Outset    3  0     3  0
Soil    1  0     4  0
Brown clay, strong and stony    53  0     57  0
Soft marl    6  0     63  0
Brown limestone, with strong marly parting    48  0     111  0
Strong brown limestone    119  0     230  0
Strong brown limestone    1  0     231  0
Strong limestone, with water    84  0     315  0
Limestone, mixed with sand    4  0     319  0
Strong brown limestone    84  0     403  0
Sand, with water    8  6     411  6
Grey metal, mixed with blue    8  4     419  10
Red metal or sandy post    7  6     427  4
Strong white post, with whin    2  5     429  9
Grey metal, mixed with post girdles    3  2     432  11
Dark metal, with post girdles    4  1     437  0
Grey metal    16  1     453  1
COAL    0  0½     453  1½
Grey metal    18  3½     471  5
COAL    0  3     471  8
Dark grey metal, with post girdles    16  11     488  7
COAL    4  6     493  1
    COAL    0  5       
    Band    0         
    COAL    0  8       
    Band    0         
    COAL    1  4       
    Band    0  2       
    COAL    1  8       
Grey metal    2  4     495  5
Grey post, with whin girdles and metal partings    5  11     501  4
COAL    0  1     501  5
Dark grey metal    4  4     505  9
COAL    1  0     506  9
Grey metal    9  4     516  1
COAL    0  3     516  4
Dark grey metal    1  1     517  5
COAL    0  1½     517  6½
Dark grey metal    6  4     523  10½
Strong white post    12  4     536  2½
Dark grey metal    14  3     550  5½
Black stone, with ironstone girdles    6  0     556  5½
COAL    4  11     561  4½
    COAL    2  8       
    Band    0  4       
    COAL    1  11       
Grey metal    11  3     572  7½
COAL    0  1½     572  9
Grey metal    7  6     580  3
Grey post    7  6     587  9
Grey metal    73  3     661  0
COAL    0  8     661  8
Black stone, mixed with coal    0  3½     661  11½
Strong grey post, with girdles    13  7     675  6½
COAL, foul    0  7     676  1½
Grey metal, with post girdles    15  1     691  2½
Strong white post    25  9     716  11½
Grey metal    33  10     750  9½
Strong white post, with water    43  9     794  6½
Dark grey metal    34  3     828  9½
COAL    1  1     829  10½
    COAL    0  3       
    Band    0         
    COAL    0         
Strong grey post, with metal partings    8  3     838  1½
COAL    0  8     838  9½
Ironstone balls    16  6     855  3½
Strong grey post, mixed with whin    33  3     888  6½
Grey metal    4  3     892  9½
COAL    2  10     895  7½
    COAL    0         
    Parting    0         
    COAL    2  0       
Strong white Post, with water and metal partings    36  0     931  7½
Grey metal    1  0     932  7½
Strong white post, with water    18  9     951  4½
COAL    2  3     953  7½
Dark grey metal    6  7     960  2½
Dark metal, mixed with water    8  0     968  2½
Strong white post, with metal partings    31  4     999  6½
Dark grey metal    13  1     1012  7½
COAL    0  8     1013  3½
Grey metal    13  2     1026  5½
COAL    0  6     1026  11½
Grey metal, with post    26  3     1053  2½
COAL    0  8     1053  10½
Grey metal, with post girdles    99  0     1152  10½
COAL - Five-Quarter Seam    3  5     1156  3½
Strong grey metal stone    34  0     1190  3½
Black metal, mixed with coal    2  0     1192  3½
Grey metal    4  5     1196  8½
COAL    1  0     1197  8½
Grey metal, with thin girdles    23  0     1220  8½
COAL    1  2     1221  10½
Strong grey metal stone    27  5     1249  3½
White post    16  5     1265  8½
Scamy black post    1  2     1266  10½
Strong grey post, with metal partings    54  4     1321  2½
COAL - Main Coal Seam    6  1     1327  3½
Strong grey and white post    15  1     1342  4½
Black stone    2  6     1344  10½
Grey metal, with ironstone girdles    28  11     1373  9½
COAL - Maudlin Seam    3  6     1377  3½
Grey metal, with post girdles    79  3     1456  6½
Black metal    3  0     1459  6½
COAL    0  11     1460  5½
Strong grey metal, with post girdles    7  10     1468  3½
COAL    0  5     1468  8½
Grey metal and post girdles    9  5     1478  1½
COAL    1  2     1479  3½
Grey metal, with post girdles    34  7     1513  10½
COAL - Hutton Seam    4  10     1518  8½
Grey metal    5  6     1524  2½
Black stone    0  6     1524  8½
COAL    0  9     1525  5½
Strong grey post, with metal partings    28  10     1554  3½
Black metal    1  2     1555  5½
Grey metal stone, withpost girdles    7  7     1563  0½
Black metal    1  0     1564  0½
COAL    0  1     1564  1½
Strong white post    31  7     1595  8½
Black metal, mixed with coal    11  2     1606  10½
Dark grey metal, mixed with coal    7  4     1614  2½
Strong white post    1  8     1615  10½
Black metal    3  0     1618  10½

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 1677 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 Seaton Colliery

 


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