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of Chatham Street, Clayton, Manchester (1914)
1894-1901 Arthur George Green (1864-1941) was manager of the colour department.
1897 The company was registered on 31 March, to take over and extend the business of a company of the same name. 
1913 Dreyfus resigned.
1918 Sandoz and Geigy were given shares in Clayton Aniline.
From 1920 to 1960 the company operated under the handicap of the Dyestuffs Import Regulations Act, which prevented it from importing various dyes and intermediates from Switzerland.
The Ciba Speciality Chemicals' Clayton plant closed in 2009 with the loss of 300 jobs. The 44-acre site was to be cleared for housing.