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United Manganese of Kalahari

United Manganese of Kalahari (UMK) is a South African mining company, operating on the Kalahari manganese field in the John Taole Gaetsewe District Municipality in the Northern Cape Province of South Africa.

The Kalahari manganese field is regarded as the largest manganese ore deposit globally. The field extends continuously in a north-western direction, for a distance of 34km from Mamatwan Mine in the south to the Wessels and Black Rock Mines in the North

UMK is a company operating in a manganese based economy with exposure to the export market. It is strategically located with good access to rail infrastructure, rapid load-out and export facilities.


Address of the head office:

Office 502, 5th Floor, 44 Melrose Boulevard, Melrose Arch, South Africa


UMK is an Ordinary Member of the International Manganese Institute (IMnI).