Olen (Dutch pronunciation: [ˈoːlə(n)]) is a municipality located in the Belgian province of Antwerp. The municipality comprises three towns, situated on a south–north axis: In 2021, Olen had a total population of 12,600. The total area is 23.10 km². In the 1920s and 1930s the Union Minière du Haut Katanga company, operating in the then Belgian colony of Congo, had a virtual monopoly of the world uranium market (holding most of the deposits known at the time). The uranium mined in Congo was mostly transported to the UMHK refinery for uranium ore which was located in Olen. More information...
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