Collieries after Nationalisation in 1947

Dates in brackets indicate the date that the colliery merged with another
Name Opened Closed (Merged)
Abercynon 1889 (March) (1975)
Albion 1884 September 1966
Britannia 1910 December 1983
Deep Navigation 1873 March 1991
Llanbradach 1890 December 1961
Nantgarw 1947 (March) (1975) Merged with Windsor
New Rockwood 1937 May 1963
Penallta 1905 November 1991
Pengam 1905 June 1956
Windsor 1896 (March) (1975) Merged with Nantgarw
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