Collieries after Nationalisation in 1947

Dates in brackets indicate the date that the colliery merged with another
Name Opened Closed (Merged)
Aberpergwm 1947 January 2011
Blaengwrach 1960 July 1983
Coronation Level 1940 1947
Cwmgwrach 1910 September 1963
Fernhill, Nos 1 & 2 1895 (March) (1966)
Fernhill, Nos 3 & 4 1915 (March) (1966)
Ffaldydre 1915 September 1963
Glyncastle 1896 April 1965
Glyncorrwg 1905 May 1970
North Rhondda 1910 July 1960
North Rhondda No.2 1875 May 1947
Onllwyn, No.1 1918 April 1964
Onllwyn, No.3 1918 February 1962
Onllwyn, Trigloyn 1935 1950
Pentreclwydau 1955 May 1967
Rhas 1910 November 1953
Rhigos, No.1 1940 February 1965
Rhigos, No.7 1955 February 1965
Rock 1905 October (1961) Merged with Aberpergwm
Tower 1941 January 2008
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