Taff Vale Railway A class

The Taff Vale Railway A class was a class of 0-6-2T steam tank locomotives designed by J. Cameron for mixed traffic work and introduced in 1914. It was an enlarged version of the O4 class designed by Tom Hurry Riches in 1907, and the last new class of locomotive introduced on the railway. With 58 built, it was the numerically largest class of tank locomotive on the railway, and it used driving wheels of the same diameter as the railway's passenger engines. The locomotives were built in several batches by Hawthorn Leslie, Nasmyth, Wilson and Company, Vulcan Foundry and the North British Locomotive Company. The first was withdrawn in November 1952 and the last seven together in August 1957, and none is preserved.