Tungsten West, Elmet Sign $1.8B Offtake; UK Critical Mineral Supply Chain Locks Into US Market

Tungsten West and US-based Elmet Technologies signed a binding eight-year offtake agreement on September 23 for 1,000 tonnes per annum of tungsten oxide (WO₃) from the Hemerdon mine in Devon, valued at £1.4 billion ($1.8 billion). The deal secures a Western supply chain for tungsten—a critical material for defense and manufacturing—and complements the UK National Wealth Fund's £71 million investment and exclusive right to procure up to 50% of Hemerdon's annual production.

This deal is capital discipline: the UK National Wealth Fund put £71M behind reopening a mine that shut in 1944, but the commercial anchor—the $1.8B offtake—had to come from the US buyer. Elmet now controls the pricing and delivery schedule for 50% of Western tungsten production; if China cuts rare-earth exports in retaliation for Taiwan contingency planning, tungsten becomes the binding constraint on missile and armor production, and Elmet holds the valve.

The second move: Hemerdon's 1,000 tonne annual capacity is roughly 8-10% of global tungsten demand. That's not independence—it's a beachhead.

WHY IT MATTERS

Hemerdon is now the only active Western tungsten mine capable of supplying defense-grade material at scale, and this agreement locks 50% of its output into the US supply chain while the UK government secures the other 50%—eliminating the single largest vulnerability in allied tungsten sourcing.

The eight-year term and binding structure mean both parties are betting on sustained defense demand; if production ramps as planned, NATO allies exit their dependence on Chinese and Russian tungsten by 2027. Watch the UK-US critical minerals MOU renewal (expected Q4 2026) for whether this offtake becomes a template for other rare-earth and specialty-metal agreements.

WHAT THIS DOESN’T TELL US

Does Elmet's production capacity actually match the 1,000 tonne annual offtake, or is there a processing bottleneck between Hemerdon output and finished tungsten products that could constrain downstream defense manufacturers?

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