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William Smith Longridge (1819-1877)
1819 Born the son of Michael Longridge
1877 December 29th. Died.
1879 Obituary 
WILLIAM SMITH LONGRIDGE was born on 22nd February 1819 at Bedlington, Northumberland, and died at Burgess Hill, London, on 29th December 1877, in the fifty-ninth year of his age.
About 1836, when only seventeen years of age, he took the practical management of the Bedlington Iron Works, which he retained until the works passed into other hands in 1855.
Subsequently he was engaged in iron mining and manufacturing operations, residing principally at the Alderwasley Iron Works, Ambergate, Derbyshire, until 1877, when he retired from business.
He had a very thorough practical knowledge of all branches of the iron and steel manufacture; and was the inventor of a method for rolling boiler plates in a continuous hoop, so as to avoid either welding or riveting the longitudinal joints of cylindrical brief outline in a discussion at one of the meetings of the Institution.(see Proceedings Inst. M. E. 1866, page 76).
He became a Member of the Institution in 1865.