Port Talbot Railway

The Port Talbot Railway and Docks Company operated a mineral railway and dock system in South Wales centred on Port Talbot and the surrounding coal and iron producing districts of the Afan valley and the valleys tributary to it, with a locomotive fleet primarily comprising tank engines suited to the steep gradients and heavy mineral traffic of the South Wales coalfield. The Port Talbot Railway connected the collieries and ironworks of the Afan valley with the export docks at Port Talbot, and its locomotives were characteristically heavy-duty tank engines of 0-8-2T, 0-6-0T, and similar types suited to the demanding gradients and the heavy coal and mineral loads of the South Wales valleys.

South Wales mineral railways of the Victorian and Edwardian era had a distinctive character shaped by the extraordinary richness of the coalfield and the topography of the narrow steep valleys that descend from the coalfield to the coast. The Port Talbot Railway, like the Taff Vale, Rhymney, Cardiff, Pontypridd, Caerphilly and Newport, and other South Wales mineral railways, operated intensively loaded short-distance trains from the colliery sidings in the valley heads down to the docks at Port Talbot for export, where the coal was loaded into collier ships for delivery to the furnaces and factories of Europe, the Royal Navy, and the world. The railway's 0-8-2T tank engines were particularly suited to working both up the grade with empties and down the grade with loaded coal in the cramped valley landscape, their eight coupled wheels giving maximum adhesion on the steep gradients.

The Port Talbot Railway was absorbed into the Great Western Railway in 1922, just before the Grouping, and its locomotive fleet passed to the GWR and subsequently to British Railways. The specific locomotive classes operated by the Port Talbot Railway are not individually preserved in the heritage fleet, though the South Wales mineral railway tradition is represented through various GWR tank types.