The Nimba Gold Refinery is on track to begin commercial operations in July 2026, pending final regulatory approvals. The $30 million facility, built near Conakry, is designed to start at 530 tonnes of annual processing capacity, roughly 17 million ounces, before scaling to 733 tonnes at full production, a level that would make it the largest single gold refinery on the African continent.
The latest development
The refinery is fully financed by entrepreneur Yacoub Sidya, founder of MSS Security and Phoenix Precious Metals, in partnership with Guinea’s Ministry of Mines and the UAE’s Emirates Minting. Bangaly Steve Toure, deputy head of Guinea’s Mining Investment Fund, confirmed the July timeline and capacity figures, describing the plant as structured around a public-private partnership model. Guinea’s Mines Minister Bouna Sylla has framed the project in explicit terms: the country produced roughly 2.32 million ounces of gold last year, worth about $7 billion, but retained less than 1% of that value domestically before now. The refinery is designed to close that gap by keeping the processing margin inside Guinea rather than shipping doré abroad for refining in Dubai, Switzerland or India.
The project lands just after President Mamady Doumbouya banned raw gold exports with immediate effect in late June, mirroring measures already applied to Guinea’s bauxite sector. Conakry is also preparing a decree to formalise artisanal gold production and strengthen traceability, a parallel track meant to bring small-scale miners, who dominate output in several regions, into the same value chain the refinery is built to serve.
Why this matters
Guinea’s move fits a wave, not a standalone bet. Ghana’s Gold Board began purchasing 30% of large-scale miners’ output locally from July 1, up from 20% previously. Mali broke ground in mid-2025 on the state-controlled Senu refinery, targeting 200 tonnes of annual capacity. Burkina Faso is building its own facility after overhauling its mining code in 2024. What distinguishes Guinea’s approach is scale and financing structure: at 733 tonnes of planned full capacity, Nimba would outsize Mali’s Senu refinery by more than three times, and it is backed by private capital rather than state investment alone, which shortens the path to construction but raises a separate question, whether a privately financed regional hub can attract gold flows from neighbouring producers the way a state champion might.
What it changes
For Guinea, the immediate effect is straightforward: gold that previously left the country as raw doré, capturing almost none of the refining margin, can now be processed domestically before export. For the region, the more interesting effect is optionality. Minister Sylla has said explicitly that multiple national refineries operating side by side across West Africa is not a problem, since competitiveness, not politics, should decide which facilities succeed. That framing matters because it opens the door to Nimba positioning itself as a regional processing point for gold produced elsewhere in West Africa, not just Guinea’s own output, provided its economics and certification track record hold up.
What to watch next
Three markers will show whether Nimba becomes a durable regional hub or a well-financed national facility. First, whether the plant secures LBMA (London Bullion Market Association) accreditation, the credential that determines whether its bars are accepted on international markets without being re-refined elsewhere, since neither Nimba nor Mali’s Senu refinery has disclosed a certification timeline yet. Second, whether the artisanal formalisation decree actually channels small-scale production into the refinery’s supply chain, given that informal output still represents a significant share of Guinea’s total. Third, whether neighbouring producers route any volume through Nimba once it reaches full capacity, which would be the clearest signal that Guinea’s private-capital model can compete with the state-backed refineries taking shape in Accra and Bamako.