Discovery mothballs Boseto on low copper prices, high stripping costs

Discovery Metals will place the Boseto copper mine in Namibia on care and maintenance in the next six months in response to the weak outlook for copper prices and high stripping costs at the mine.

Discovery Metals will place the Boseto copper mine in Namibia on care and maintenance in the next six months in response to the weak outlook for copper prices and high stripping costs at the mine.

The Sydney-listed junior copper miner has struggled to run Boseto at a profit since bringing the mine into production in 2012, and the economic viability of the project has been further dented by the copper price’s slump to four-year lows.

After a review of market conditions and mine operating costs, the Discovery board voted to halt open-pit mining and processing operations by mid-2015, the company told investors on Friday December 19.

“The review concluded that the current outlook for copper pricing on world commodity markets is expected to remain soft in the short to medium term (and hence a recovery in the profitability of the Boseto open pit operations is unlikely in the near future),” the company announced.

Before the site is mothballed, the company will mine the existing pits at Boseto with a focus on cost control and revenue maximisation, and at the end of that process it expects to be able to finance the care and maintenance of the mine, and pay back its short-term creditors, Discovery said.

The company is still in exclusive talks with Cupric Canyon Capital over the potential sale of the Boseto mine, but Discovery will move ahead with the care and maintenance campaign with immediate effect, irrespective of the outcome of those negotiations.

It expects to update investors about the potential sale in January. If the transaction does not proceed, Discovery will open up discussions with other potential buyers, the company announced.

The company’s largest shareholder is Transamine Trading, the Switzerland-based raw materials trading house, which owns a 13% stake in the company. Blumont Copper, which is the second-largest shareholder, owns a 10% stake.

Mark Burton 
mburton@metalbulletin.com
Twitter: @mburtonmb 

What to read next
Fastmarkets wishes to clarify that it accepts data submissions in outright price and as a differential to the Mineral Benchmark Price (HPM)-plus-premium for its Indonesian domestic trade nickel ore price assessments. Fastmarkets is also seeking market feedback on recent changes to the Indonesian government’s HPM specifications.
Own-sourced copper output from Glencore’s African copper assets — KCC and Mutanda in the Democratic Republic of Congo — surged by 68% year on year to 67,900 tonnes over the same period, while Glencore’s cobalt production fell by 39% year on year amid the DRC’s export quota system.
Copper’s long-term outlook is constrained by the industry’s limited ability to bring new supply online fast enough to meet rising demand, with permitting delays, higher capital costs and policy risks slowing project development, industry executives said at the FT Commodities Global Summit on Wednesday April 22.
Capital is flowing back into junior mining, but selectively. Investment is increasingly favouring development‑stage assets with clearer paths to production, supported by government funding and strategic partnerships. While demand for critical minerals underpins the cycle, early‑stage explorers continue to struggle for capital as investors prioritise discipline, ESG alignment and near‑term cash flow.
Copper in concentrate production from Ivanhoe Mines' Kamoa-Kakula complex in the Democratic Republic of Congo (DRC) fell to 61,906 tonnes in the first quarter, down by 54% from 133,120 tonnes a year earlier, with the company now evaluating local third-party concentrate purchases to advance the ramp-up of its on-site smelter, according to an April 13 production release as the market focused its attention on the impact of global sulfuric acid shortages during CESCO Week in Chile from April 13-17.
China's planned sulfuric acid export ban from May 1, historic lows for copper concentrates treatment and refining charges (TC/RCs) and a fragmenting 2026 benchmark system dominated CESCO Week 2026 in Santiago from April 13-17.