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Cwmneol colliery, near Aberdare.

The Cwmneol South pit opened to the Seven Feet seam at 359 yards deep in1848 by Messrs. Carr and Morrison. It also went by the name Morris's pit, probably after one of the owners. North pit or "Lanky pit" (upcast) was added by 1850. Ventilation was by furnace initially and winding by water balance until 1855.

An accident occurred here on Thursday the 28th of January, 1855, when the cage in which eight men was ascending the shaft over-shot the pit top and crashed into the head-gear. The force of the impact broke the winding rope and the cage and its occupants fell the 240 yards to the pit bottom, killing all eight miners.
They were;

Davies, Jenkin     aged    24
Hopper, William     17
Jones, Thomas       30
Kelley, Phillip     25
Thomas, Samuel      25
Thomas, Daniel      24 
Thomas, William     17
Weeks, Richard      23

In 1865 the Aman Aberdare Coal Co. Ltd .became the new owners, although by 1868 it was in the hands of  Powell Duffryn Company.

Production ceased in 1893 to deepen the shafts in order to work the lower seams and restarted in 1898. 

In 1908 there were 767 men employed and 870 in 1918.

From a list 1923, there were 1,308 men employed, producing from the Yard, Bute, Four Feet and Nine Feet seams.

By 1945 the workforce number had fallen to 496.

Cwmneol closed in 1948.