The 40 largest mining companies in the world
The Union Minière du HautKatanga (French; literally "Mining Union of UpperKatanga"), often abbreviated to Union Minière or UMHK, was an AngloBelgian mining company which operated in the copperbelt in the modernday Democratic Republic of the Congo between 1906 and 1966.. Created in 1906, the UMHK was founded as a joint venture by the Société Générale de Belgique, the Comité .