When the coal industry was nationalised in 1947, there were 8 collieries in Denbighshire; now there are none. The last pit to close was Bersham in 1986.

Collieries after Nationalisation in 1947

Colliery Location Opened Closed
Bersham Rhostyllen 1869 December 1986
Black Park St Martins 1855 January 1951
Bryn-kinallt St Martins 1895 November 1968
Gresford Wrexham 1907 October 1973
Hafod Ruabon 1905 1967
Hafod-y-bwch Ruabon 1865 March 1968
Llay Hall Cefn-y-bedd 1875 November 1949
Llay Main Llay 1914 March 1966

The following pages refer to some of these mines in more detail:

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