It is emerging that the Bogoso-Prestea Gold Mine stands as one of Ghana’s most historically significant and economically promising mining assets, yet decades of weak investment choices and governmental policy missteps have left it operating far below its potential.
The mine has been undermined in various ways, limiting the potential impact it could fetch for the country and the catchment communities.
These revelations were made by the Honorary Vice President of IMANI Africa, Bright Simons, who was speaking at a recent webinar themed “Bogoso-Prestea Gold Mine: Chaos Where There Should Be Gold.”
Bright Simons, in his analysis, laid out a stark contrast between the mine’s extraordinary value and its long-standing underperformance.
The Remaining Gold Reserve
Despite the over a century old mining at the Prestea-Bogoso mine, there still remains a very significant reserve. The concession still holds an estimated 5.1 million ounces of gold. Bright Simons analysed that at current market prices, this translates into roughly $25 billion in potential value.
This is more than eight times the size of Ghana’s $3 billion IMF programme. By any measure, Simons argued, this is not just another mine; it is a strategic national asset.
“Bogoso-Prestea is an incredibly important mine. You know, we’ve started, in terms of modern mining, we’ve seen mining from that particular location in the country since 1912,” he remarked.
He added, “We still have 5.1 million ounces of gold remaining in that concession, or that enclave. Remember that, at current prices, that makes this a $25 billion asset.”
The Geological Endowment
Geologically, its importance is even clearer. The Bogoso-Prestea site lies within the richly endowed Ashanti greenstone belt. This, the experts say, is a 250-kilometre mineral corridor stretching through Obuasi and Tarkwa.
This belt is globally recognised for its gold deposits, making the mine part of one of the most lucrative geological formations in the world.
“From Obuasi, through Tarkwa, through the mine, the Ashanti greenstone belt, which in technical terms is called a paleoproterozoic zone, is an incredibly wealthy, from a natural resource point of view, particularly from a gold point of view, part of the country. It’s a 250 kilometre belt of massive wealth,” he noted.
The Ore Quality
Arguably, what truly sets Bogoso-Prestea apart is its ore quality. While the global average gold grade hovers around three grammes per tonne, Bogoso has historically delivered about 12.4 grammes per tonne, this is roughly four times richer.
At its peak, the grade climbed to 20 grammes per tonne, nearly seven times the global average. Even today, certain pockets yield as much as 127 grammes per tonne, an exceptional figure by any industry standard.
“And one of the ways in which you judge its degree of importance is to look at how, on average, gold mines around the world, are productive. So on average, you’re talking about three grammes per tonne, for every tonne of ore that you dig out of a particular gold mine, about three grammes of it. That’s typically what you find in the average global gold mine. In Bogoso, it’s around 12.4 grammes. So it’s almost four times richer than the average gold mine,” he explained.
He added, “And at its peak, it was actually 20 grammes per tonne. That means that at this peak, it was almost seven times richer than the average gold mine. And there are parts of the mine, even today, where you have a richness that is about 127 grammes per tonne, compared to the three grammes per tonne, on average, for global gold mines.”
A Rich Mine on a Decline
Despite the richness of the mine, production has steadily declined. In the 1960s, the mine was producing at significantly higher levels, supported by better equipment, stronger investment, and more effective management systems. Output has since dropped to barely over 10 percent of its historical peak.
According to Simons, this decline is neither accidental nor inevitable. He attributes it to a combination of poor investment decisions, inconsistent management, and policy failures, particularly following the nationalisation of the mine in the early 1980s.
Not a Campaign Against Resource Indigenization
He argues that state control, in itself, was not the problem. Rather, it was the inability to maintain high operational standards, invest adequately in modern equipment, and ensure competent management. The result was a gradual erosion of productivity and efficiency.
Compounding the issue has been a cycle of reactive decision-making. Instead of building sustainable capacity, successive interventions have oscillated between under-resourced local control and transfers to external operators who also lacked the technical or financial strength to revive the mine. This, Simons noted, reflects a deeper structural problem: a failure to align resource ownership with the capacity to manage it effectively.
Another critical factor has been underinvestment. Mining is capital-intensive, requiring continuous reinvestment in exploration, equipment, and processing technology. At Bogoso-Prestea, insufficient capital injection over the years has meant outdated infrastructure, reduced operational efficiency, and declining output.
The Bottomline
A mine that should be a major revenue driver for the country has instead become a case study in lost opportunity.
Bright Simons emphasised that the debate should not be framed as a choice between local and foreign control, but rather about competence, standards, and long-term planning. Ghana, he argued, has the potential to manage such assets successfully, but only if it prioritises quality management, disciplined investment, and strategic oversight.
