Teesside Steelworks Teesside Steelworks The Teesside Steelworks was a large expanse of steelworks that formed a continuous stretch along the south bank of the River Tees from Middlesbrough to Redcar. At its height there were 91 blast furnaces within a 10 mile radius of the area. By the late 1970s, there was only one left on Teesside. Opened in 1979 and located near the mouth of the River Tees close to the river's outfall into the North Sea, the Redcar blast furnace on Teesside was the second largest in Europe. The majority of the steelworks, including the Redcar blast furnace, Redcar and
County Borough of Teesside County Borough of Teesside Teesside was, from 1968 to 1974, a local government district in northern England. It comprised a conurbation that spanned both sides of the River Tees from which it took its name. The district had the status of a county borough and so was independent of the County Councils of the North Riding of Yorkshire and of County Durham, in which it was geographically located. The River Tees formed the historic county boundary between Yorkshire and Durham. A continuous conurbation had built up around the mouth of the river, increasing greatly in population from the nineteenth century