William Justin Kroll

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Science and technology

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2

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What Wikipedia says

William Justin Kroll (; born Guillaume Justin Kroll, Luxembourgish: [kʀol]; November 24, 1889 – March 30, 1973) was a Luxembourgish metallurgist, born in Esch-sur-Alzette. He is best known for inventing the Kroll process in 1940, which is used commercially to extract metallic titanium from ore.

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