Durham Mining Museum - Hetton Colliery Shaft Details (original) (raw)
Minor Pit
An Admeasurement of the Minor Pit to the Main Coal Coal, and Strata sunk through from there to the Hutton Seam. Begun December 23rd, 1820 ; finished January 6th, 1823
Shaft Details
Sunk: 23 Dec 1820, Closed: 11 Jul 1950
Approximate surface level 330 feet above sea (Ordnance datum)
Switch to measurements in: fathoms, feet & inches, or metres
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Geology encountered Thickness Depth ft. in. ft. in. Total depth of the Minor Pit to the thill of the Main Coal Seam, sunk through various strata similar to those specified in the Blossom Pit sinking account 652 1 652 1 White post 0 8 652 9 Grey and white post 11 0 663 9 Black metal stone 1 4 665 1 Blue metal, with ironstone girdles 8 4 673 5 Black metal 1 4 674 9 Grey metal stone 2 10 677 7 COAL 0 5 678 0 Strong grey metal stone 2 0 680 0 Grey and white post 27 9 707 9 Grey metal 9 2 716 11 COAL - Maudlin Seam 5 3 722 2 COAL 1 2 Grey metal 3 9 COAL 0 4 Grey metal 4 2 726 4 Blue metal 4 0 730 4 Grey metal 11 6 741 10 Blue metal, with coal pipes 3 8 745 6 Strong grey post 5 8 751 2 Strong grey post, with strong girdles 5 2 756 4 Whin 3 0 759 4 Soft grey metal 17 8 777 0 COAL - Low Main Seam 4 1 781 1 White post 12 6 793 7 Whin 2 2 795 9 Grey metal, with post girdles 12 10 808 7 Black and blue metal stone 6 0 814 7 COAL (commonly called splint coal) 1 0 815 7 Grey metal, with post girdles 5 11 821 6 COAL 1 0 822 6 COAL 0 4 Band 0 1¾ COAL 0 7 Thill 4 0 826 6 Strong grey metal 8 0 834 6 Grey post 8 4 842 10 Black metal 3 0 845 10 Blue metal, with post girdles 1 4 847 2 Strong white post 24 0 871 2 Grey metal and post girdles 7 0 878 2 COAL - Hutton Seam 6 2 884 4 COAL 4 7½ Band 0 3½ COAL, bottom (coarse) 1 3 Depth of sump 20 0 904 4 |
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Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume F-K, published by the North of England Institute of Mining & Mechanical Engineers, 1885
original entry for sinking/boring number 1155 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume F-K, published by the North of England Institute of Mining & Mechanical Engineers, 1885"
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