Teesside Steelworks

Teesside Steelworks was a large steelworks located along the south bank of the River Tees between Middlesbrough and Redcar in the unitary authority area of Redcar and Cleveland in the ceremonial county of North Yorkshire, England. Located near the mouth of the River Tees close to the river's outfall into the North Sea, the site's blast furnace was the second largest in Europe.

The majority of the steelworks, including the Redcar blast furnace, Redcar and 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.

Founded by Dorman Long in 1917, the steel produced was used to build structures including the Sydney Harbour Bridge, Tyne Bridge and the Auckland Harbour Bridge.

In 1967 Dorman Long was absorbed into the newly created nationalised company, British Steel Corporation. After privatisation in 1988 to form British Steel plc, in 1999 the company merged with Netherlands-based steel maker Koninklijke Hoogovens to form Corus Group. Corus utilised the site for basic oxygen steelmaking, using iron produced at the company's Redcar blast furnace. In 2007, Corus was bought by Tata Steel.

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