Congolese copper-cobalt mining company that owns and runs the open-cast Ruashi mine near Lubumbashi and owns the Musonoi mine in Lualaba. Jinchuan International's 2025 annual results call Ruashi Mining SAS its indirect non-wholly-owned subsidiary; USGS's 2022 yearbook gives Jinchuan International 75%, and ITIE-RDC's 2023 report lists Gécamines' 25% under the name RUMI, which the report uses beside RUASHI MINING in its payment tables without expanding it: reading RUMI as Ruashi Mining is the hub's judgement. USGS gave the Ruashi mine a capacity of 5,000 tonnes of cobalt a year (2022). ITIE-RDC records USD 2,303,559 in royalties paid by RUMI to Gécamines in 2023, and Gécamines' 2025 accounts record USD 4.3 million from Ruashi Mining in 2025. Microsoft's 2021 cobalt list names Ruashi Mining SAS among its smelters and refiners. The Musonoi ownership rests on Jinchuan International's filing alone.
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.
ITIE-RDC's 2023 report lists Gécamines' 25% in RUMI, the name the report uses beside RUASHI MINING in its payment tables; reading RUMI as Ruashi Mining is the hub's judgement. The 75% USGS gives Jinchuan International (2022) leaves the same 25%.
la participation de l'Etat congolais dans la SICOMINES à travers la GECAMINES reste inchangée (32%)
Ruashi Mining SPRL (Jinchuan Group International Resources Co. Ltd., 75%) Ruashi Mine near Lubumbashi 38,000 copper; 5,000 cobalt
Jinchuan International calls Ruashi Mining SAS its indirect non-wholly-owned subsidiary in its 2025 annual results; USGS's 2022 yearbook gives it 75% of the company, and its 2024 review a majority interest.
commencement of commercial production at the Musonoi Mine in November 2025
Ruashi Mining SPRL (Jinchuan Group International Resources Co. Ltd., 75%) Ruashi Mine near Lubumbashi 38,000 copper; 5,000 cobalt
Kamoto Copper Co., a joint venture between Katanga Mining Ltd. (a subsidiary of Glencore plc.) and Gécamines
Named as Ruashi Mining SAS 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.
USGS's 2022 yearbook names Ruashi Mining SPRL as the operating company at the Ruashi mine, and Jinchuan International's 2025 results describe the mine as owned by Ruashi SAS.
commencement of commercial production at the Musonoi Mine in November 2025
Ruashi Mining SPRL (Jinchuan Group International Resources Co. Ltd., 75%) Ruashi Mine near Lubumbashi 38,000 copper; 5,000 cobalt
Jinchuan International's 2025 results describe the Musonoi mine as a copper and cobalt mine owned by Ruashi SAS. Single source, from the owning group.
commencement of commercial production at the Musonoi Mine in November 2025