United Manganese of Kalahari (UMK) is a South African company, mining manganese in the John Taolo Gaetsewe District Municipality in the Northern Cape Province of South Africa. The Kalahari manganese fields are regarded as the largest manganese ore deposit globally.

Established in 2005, UMK is 51% black owned and is the 4th largest manganese exporter in South Africa. UMK is a long-life asset containing both opencast and underground resources in excess of 100 years.  

Location of the mine:

Farm Perth, District Road D3340, Hotazel

UMK mine