Collieries after Nationalisation in 1947

Dates in brackets indicate the date that the colliery merged with another
Name Opened Closed (Merged)
Bedlinog 1875 December 1948 [Pumping Station – NCB]
Bedlinog Cross Measures Drift 1930 March 1956 Formerly Nantyffin Drift
Castle  1866 1950 [Pumping Station – NCB]
Cwmglo 1924 December 1949
Deep Duffryn 1850 September 1979
Lucy Thomas, No.4 Pit 1940 March 1955
Lucy Thomas, No.5 Pit 1945 March 1955
Merthyr Vale 1869 August 1989
Pidwellt 1930 December 1953
Taff Merthyr 1922 October 1992
Trelewis Drift 1954 August 1989
Werfa Dare 1860 August 1949

Collieries that closed prior to 1947

Abercanaid Colliery
Bargoed Longwork Colliery
Black Vein Drift
Clynmill Colliery
Cyfarthfa Collieries
Cwmbargoed Colliery
Cwmdu Colliery
Dowlais Collieries
Gethin Collieries
Graig Colliery
Nixon’s Navigation Colliery
Penydarren Colliery
Plymouth Colliery
South Duffryn Colliery
Waunwyllt Colliery
Wernlas Colliery

Small Collieries in the Merthyr Tidfil area
Small Collieries in the Merthyr Tidfil area worked under NCB licence

Small collieries of the Abercanaid Troedyrhiw & Pentrebach areas
Small collieries of the Abercanaid Troedyrhiw & Pentrebach areas worked under NCB licence

Small collieries of the Dowlais Cwmbargoed & Penydarren areas
Small collieries of the Dowlais Cwmbargoed & Penydarren areas worked under NCB licence

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