Guinea’s Nimba Mining Company to Sell Bauxite Through Monthly Tenders

Guinea’s state-owned Nimba Mining Company plans to sell bauxite through monthly tenders open to international traders and mining companies, as the government seeks to strengthen state participation in the country’s mining industry.

Guinea Mines Minister Bouna Sylla told Reuters on Tuesday that the move is part of efforts to develop Nimba into a national mining champion capable of operating on a commercial footing similar to major international mining companies.

Nimba Chief Executive Patrice L’Huillier said the company also plans to secure a long-term trading partner through an agreement guaranteeing minimum annual sales volumes. Additional bauxite production would then be marketed through monthly spot tenders.

Global Traders Could Bid for Guinea Bauxite

Under the proposed model, international commodity traders and mining companies could compete for Nimba’s bauxite cargoes through periodic tenders.

Sylla said potential buyers could include major global commodity companies such as Mercuria, Glencore, Rio Tinto or Vedanta, depending on the tender and commercial terms.

The strategy would give Nimba greater flexibility in marketing its production while allowing the company to establish longer-term commercial relationships.

Guinea Expands State Control of Mining

The move is part of Guinea’s broader effort to increase state participation in a mining industry historically dominated by foreign companies.

Since President Mamadi Doumbouya’s government came to power, Guinea has increased oversight of mining projects and pushed for greater local value addition, including the development of refining capacity.

The government also accelerated work on the major Simandou iron ore project, which is expected to play a significant role in Guinea’s mining sector.

Nimba Mining Company was established in 2025 as a fully Guinean-owned mining company. The company took over the assets previously operated by Guinea Alumina Corporation and now operates the Tinguilinta bauxite mine and Kamsar port facilities.

Nimba Targets 10 Million Tonnes of Bauxite in 2026

Nimba has rapidly expanded its bauxite operations since beginning production.

The company said it shipped more than 1 million tonnes of bauxite in 2025, its first year of operations, and set a target of 10 million tonnes in 2026. It plans to reach annual production capacity of about 12 million tonnes from 2027.

The company has also indicated that it wants to diversify beyond bauxite as it develops into a broader national mining group.

Nimba Plans Expansion Into Alumina, Gold and Base Metals

Nimba’s long-term strategy is modelled partly on Saudi Arabia’s Ma’aden and is built around four main areas: bauxite, alumina, gold and base metals.

Over the next two to five years, the company aims to increase annual bauxite production, advance an alumina refinery project, develop a gold mine and move a base-metals project toward bankable feasibility.

Nimba has already entered into a partnership with Australia’s Resolute Mining to explore gold opportunities in Guinea. The companies signed a non-binding memorandum of understanding to evaluate potential gold projects.

Guinea Seeks More Value from Its Mineral Resources

Guinea is one of the world’s leading bauxite-producing countries, making the development of Nimba strategically important to the government’s efforts to increase national participation in the mining sector.

Rather than relying primarily on external financing for its expansion, Mines Minister Sylla said Nimba intends to reinvest profits generated from its existing operations into new projects.

The approach would allow the state-owned company to use its bauxite business as a foundation for expanding into alumina, gold and base metals.

What the Monthly Bauxite Tenders Mean

Nimba’s planned monthly tender system could introduce a more flexible sales model for Guinea’s bauxite exports while giving international traders and miners greater access to the company’s production.

For Guinea, the strategy represents another step toward building a stronger national presence in the mining industry and capturing more value from the country’s mineral resources.

For global commodity traders, the tenders could create new opportunities to purchase Guinea bauxite directly from a state-owned producer as Nimba increases its production capacity.

Image: Nimba Mining Company

The Reuters report was published on August 11, 2026.