I mean, you could say that of basically all metallurgy prior to the 19th century... | Hacker News

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		rsynnott 82 days ago \| parent \| context \| favorite \| on: Medieval Africans had a unique process for purifyi... I mean, you could say that of basically all metallurgy prior to the 19th century.

detourdog 82 days ago [–]

Ok lets say that.

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