Tungsten West, a UK-based mining company, has released a detailed development and economic plan for restarting operations at the Hemerdon tungsten and tin mine in Devon. The company projects that, once operational, the mine could supply over 20% of the global primary tungsten output from outside China—a major boost for Western critical mineral supply chains.
Fully permitted and construction-ready, the Hemerdon project is expected to produce approximately 332,000 metric tonne units (mtu) of tungsten trioxide and 462 tonnes per year of tin concentrate during steady-state operations. Production could begin within 12 months of securing funding.
Tungsten West is currently in discussions with multiple potential investors and aims to close a $93-million funding round by the end of 2025. The project benefits from around $300 million in historical investment and promises robust returns, with a projected post-tax life-of-mine cash flow of $456 million, a net present value of $190 million, and an internal rate of return (IRR) of 29.3%—based on a conservative tungsten price of $400/mtu.
CEO Jeff Court highlighted the project’s strategic importance: “At full capacity, Hemerdon is expected to produce over 20% of the global non-China supply of tungsten and will significantly strengthen the developed world’s supply chain for this critical metal.”
The plan outlines an initial 11-year mining phase, followed by four years of stockpile processing and 12 additional years of aggregate sales. A long-term expansion program—dubbed “Hemerdon Futures”—could extend mine life beyond 40 years.
Key investments include a new front-end processing system, upgrades to existing processing facilities, and stringent environmental noise mitigation measures. The mine will process 3.5 million tonnes of ore annually and is forecasted to sit within the lowest quartile of global tungsten producers with an all-in sustaining cost of $144/mtu.
In response to China’s recent export restrictions on tungsten, which have driven market prices above $400/mtu, Tungsten West emphasized the growing importance of secure, domestic supply chains for dual-use critical metals.
The company has also received regulatory approval for limited trial processing of 2,500 tonnes of on-site material and plans to issue additional convertible loan notes to bridge funding through financial close. Hannam & Partners is acting as the financial adviser and broker for the restart funding.
