Collieries after Nationalisation in 1947

Dates in brackets indicate the date that the colliery merged with another
Name Opened Closed (Merged)
Bargoed 1904 November 1949
Bargoed, North & South 1897 June 1977
Beynon 1922 April 1973
Elliot 1883 April 1967
Groesfaen 1902 November 1968
Islwyn 1888 December 1948
Llanover 1910 May 1929
Marine 1887 March 1989
Markham 1910 September 1985
McLaren 1897 (July) (1958)
McLaren Merthyr 1897 1970
Ogilvie 1919 March 1975
Pochin 1876 July 1964
Ty Trist 1834 January 1959
Waun Llwyd 1874 (December) (1963)
West Blaina, Red Ash 1890 April 1948

See also:

Coalbrook Vale Collieries Nantglo
Glyn Colliery Brynmawr
Griffin Collieries Blaina
Lower Deep Colliery
Llyn Colliery Nantyglo
Nantyglo & Nantyglo Deep Collieries Nantyglo
Sun & North Blaina Colliery
Small collieries of the Sirhowy Valley
Upper Deep Colliery

The state of the coalfield in 1985 following the strike

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