Union Minière du Haut Katanga (UMHK), a mining company operating in Africa prior to 1966
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Umicore, a Belgian metals company and successor to UMHK, which traded as Union Minière prior to 1999
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Göran Björkdahl (a Swedish aid worker) wrote in 2011 that he believed Dag Hammarskjöld's 1961 death was a murder committed in part to benefit mining companies like Union Minière, after Hammarsköld had made the UN intervene in the Katanga crisis.