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 · HISTORY 1869 WILLIAM HAYNES patented a process of separation of minerals and gangue using oil which he called Bulk Flotation 1896 97 FRANK ELMORE and STANLEY ELMORE set up the Glasdir Copper Mine at Llanelltyd Dolgellau in North Wales where they carried out the world s first commercial Flotation process in 1897 1900 s

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