The Sodor Ironworks, also known as the Smelter's Yard, is a company serving Sodor in the television series, first introduced in the fifth season. It appeared frequently until the twelfth season, but has been mentioned frequently since then. The Ironworks is a huge foundry where scrap iron is delivered to be melted down to become molten iron. The site consists of a smelting shed, a lot of sidings and a turntable as well as heaps of twisted scrap metal and steam engines for scrap. The steam engines find the Ironworks very scary, especially in the dark, when fizzling sparks fall from huge ladles full of molten iron, and shadows move around. Arry and Bert were first based here.