born. 1989: Company is privatised becoming British Steel plc. 1990: Merged with The Cleveland Bridge & Engineering Company, Darlington. 1999: British Steel plc merges with the Dutch steel and aluminium company Koninklijke Hoogovens to become Corus Group. 2015: Former Dorman Long Steel plant on Teesside ceased production after SSI mothballed the Redcar works following a global downturn in the price of steel and later announced its UK arm had gone into liquidation. 2021: Cleveland Bridge goes into administration. 2021: The Dorman Long tower is demolished, despite its Grade II listed status. Bridge building The most famous bridge ever constructed by a Teesside company was Dorman Long's Sydney Harbour Bridge of 1932, of similar construction to but, contrary to popular belief, not modelled on the 1928 Tyne Bridge, a construction regarded as the symbol of Tyneside's Geordie pride, but also a product of Dorman Long's Teesside workmanship. The greatest example of Dorman Long's work in Teesside itself is the single-span Newport Lifting Bridge (a Grade II Listed Building). Opened by the Duke of York in February 1934 it was England's first vertical lift bridge. List of bridges constructed The following is a list of some of the bridges built by the Dorman Long: it is not fully comprehensive. Dorman Museum In 1904 Sir Arthur Dorman of Dorman Long gave the Dorman Museum to Middlesbrough in honour of his youngest son, George Lockwood Dorman, an avid collector who died in the Boer War. Amongst the museum's exhibits is a collection of ceramics from the local Linthorpe Pottery, which was known for its iridescent glazes which, at the time, were not produced anywhere else in Europe. Dorman Long Tower The Dorman Long tower was built from 1955–56 as a coking plant for steel production. The tower was an early example of brutalist architecture. It was scheduled to be demolished in 2021 due its poor state of repair and granted Grade II listed status, in an emergency listing by Historic England on 10 September 2021. The emergency listing cited its significance as a "recognised and celebrated example of early Brutalist architecture", a "nationally unique surviving structure from the twentieth-century coal, iron and steel industries" as well as "for its association with, and an advert for, Dorman Long which dominated the steel and heavy engineering industry of Teesside". In one of her first acts as Culture Secretary, Nadine Dorries revoked the listingamidst accusations of "cultural