Congolese processing entity in Haut-Katanga owned by Nanjing Hanhui Cobalt, which USGS's 2022 yearbook gives as its 100% owner, with mines in Haut-Katanga and an estimated cobalt capacity of 7,000 tonnes a year. ITIE-RDC's 2025 artisanal report lists it among the province's processing entities, with PE 5152, reproduces ministry statistics giving it 1,197 tonnes of cobalt in 2022 and 43 tonnes in 2023, and lists METALMINES among the depot holders at the Kapombo artisanal site, with no quantity. Microsoft's 2021 cobalt list names Metal Mines SARL among its smelters and refiners.
Sources support the description and the individual connections below. Publication and checking dates belong to the evidence: when it was published, and when this Hub last read it.
Reported means the cited source describes the relationship at its evidence date. Historical relationships refer to an earlier period. Announced agreements may not have been implemented. None of these labels confirms that trade continues today.
Named as Metal Mines SARL on Microsoft Devices' cobalt smelter and refiner list as of 31 December 2021; Microsoft states it has no direct transactions or contractual relationship with the listed facilities. The list is Microsoft's own disclosure; direct purchasing, volumes and mine origin unspecified.
Microsoft conducts no direct transactions and has no contractual relationship with these smelter or refiners nor their sources of ore.