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 Cleveland, Yorkshire and Durham are frequently used, such as the continued existence of Cleveland Police and Cleveland Fire and Rescue Service, and of the Cleveland postal county. The Teesside Built-up Area (BUA), previously the Teesside Urban Area, identified by the ONS for statistical purposes had a population of around 376,633 according to the 2011 census which is up 3% on the 2001 figure of 365,323, and had the following subdivisions: Eaglescliffe and Yarm are counted as a separate Yarm urban area, separated by a narrow gap, which had a population of 19,184 according to the 2011 census up 5% from