 By introducing a rolling flour milling plant for McDougall Brothers in Manchester, the likes of which he had seen working in Switzerland, Henry set in motion and guided the 'Rollermilling Revolution', a mechanisation of the British flour milling system.Not only did this form the foundation of his own successful business, Henry Simon, converted to a limited company in 1896/7, but it also transformed the 'slow, laborious and costly' batch pattern previously used, into one of the most 'highly mechanised industries in the world'.In 1878 he turned his interest towards the transformation of a second industrial process; revolutionising the manufacturing of coke.