Mackie, Irwin Cameron

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Mackie, Irwin Cameron

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1880 - 1970


Irwin Cameron Mackie was a metallurgist and inventor. He was born in Bayview, Prince Edward Island, in 1880 and graduated from Dalhousie in 1901. In 1902 he moved to Sydney, Nova Scotia, to join the company that became DOSCO (Dominion Steel and Coal Corporation), where eventually he was appointed Director of Metallurgy and Research. In the late 1920s he developed the "Mackie Process," a method for preventing cracks from appearing in rails by slowing down the cooling process, which was adopted and employed by steel producers around the world by the early 1930s. In 1946 he received the Inco Medal and in 1962, one year after retiring from what was then the Dominion Steel Company, he was granted honorary membership in the Canadian Standards Association. He died in Sydney in 1970.


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