Location:

Near Crynant, Dulais Valley

Sunk:

1921

Closed:

1968

Success by the Swansea based Llwyn-on-Colliery Company Limited encouraged the sinking of this colliery which opened production in 1921. By Nationalisation in 1947, 826 men worked at the colliery and despite an investment of £400,000 manpower gradually decreased until Cefn Coed was closed in April 1968 and is today a Steam and Mining Museum.