line ran close beside one another as they both diverged from the Taff Vale main line southwards. In 1930 a major redesign of the layout took place; the Barry route through Pontypridd to Trehafod was downgraded, and a new junction was created at Treforest, climbing to Tonteg where the Llantrisant and the Barry routes diverged. This was implemented on 10 July 1930, when the Barry passenger station (Graig) at Pontypridd was closed. The up line from Tonteg to Pwllgwaun, about two thirds of the way to Trehafod, and which included the Graig tunnel, was closed as a running line and used as a wagon storage siding from 1943. In the period 11 October 1943 to 7 September 1944 a total of 119 American locomotives were stored on this section in connection with the preparations for the Normandy landings and their aftermath. The line was closed entirely as a through route in June 1951. Demolition of Pen-yr-Heol and Pwll-y-Pant viaducts In 1937 the Pen-yr-Heol viaduct of the Barry Railway was demolished; it had crossed the Sengenydd branch of the original Rhymney Railway. The main girders were long, deep, and weighed some 35 tons each. The demolition process was to tip them off the tops of the piers, to fall into the valley fifty feet below. They were cut up there and the scrap was transported away. Next the larger Pwll-y-Pant viaduct, built in 1904, was demolished in 1937. It consisted of 11 piers, sixteen spans, eleven of and five approach arches. The main girders weighed about 90 tons each, and the total weight of steel in the structure was about 3,150 tons. The method of demolition adopted was to burn off first as much of the steel decking as possible, allowing the material to fall to the ground below; the girders were then tilted outwards by jacks on top of the brick piers until they overbalanced and fell to the ground. They were then cut up where they lay. Demolition of the 11 piers was accomplished in 1938, explosives being used to fell them and they lay in unsightly heaps until well after the 1950s. Under British Railways From nationalisation in 1948, the Barry Railway network was under state ownership, in British Railways. In 1962 the British Transport Docks Board was established and took over all the major docks installations within the British Transport Commission. Local passenger services between Barry and