Teesside Steelworks South Bank coke ovens and the BOS plant at Lackenby closed in 2015. The Teesside Beam Mill and some support services still operate at the Lackenby part of the site. Steel production on Teesside begins when Bolckow, Vaughan & Co Ltd, formerly Bolckow, Vaughan, opens the Cleveland Steelworks in Middlesbrough. Using the Bessemer process, the works have 3 blast furnaces. Albert John Dorman enters into a partnership with Albert de Lande Long taking over the West Marsh Ironworks in Middlesbrough. Dorman Long is founded. Bolckow, Vaughan & Co Ltd. acquire the Southbank Steelworks. The firm is also persuaded by Sydney
Teesside the 2001 figure of 18,335. Infilling development may join the two urban areas together. Marske-by-the-Sea is another separate Urban Area nearly contiguous with Redcar with a population of 8,282 down 7% from the 2001 figure of 8,921. Nearby Hartlepool is also sometimes considered as part of Teesside. The Hartlepool area has an urban population of 88,855 an increase of 3% from the 2001 figure of 86,085 and this can be referred to as the Teesside & Hartlepool Urban Area. If this definition is taken into consideration, with the addition of the Eaglescliffe area and Marske, Teesside would have a population