Ffaldau Colliery
Pontycymmer
Worked from 1876 to 1985. History detailed in the Welsh Coal Mines website [1]
1903 'When the 40-ton flywheel at Flaldan [sic] Colliery. Pontycymmer burst into fragments through the driving strap slipping off, a piece weighing 5cwt. fell upon a bakehouse a hundred yards away.'[2]