Collieries after Nationalisation in 1947

Dates in brackets indicate the date that the colliery merged with another
Name Opened Closed (Merged)
Abergelli 1930 (1947) Merged with Clydach Merthyr
Broad Oak 1869 May 1948
Brynlliw 1903 (1977) Merged with Morlais
Garngoch, No.1 1870 April 1952
Garngoch, No.3 1906 February 1966
Morlais 1894 (June) (1977) Merged with Brynlliw
Mountain 1903 November 1969
Mynydd Newydd 1843 June 1955
Wernfawr West 1940 May 1949

Collieries closed before 1947

 

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