An investment by Donald Trump Jr and Eric Trump, the sons of the US President, into a Kazakhstan tungsten project, has been framed as part of efforts to reduce US dependence on Chinese critical minerals.
The underlying transaction – a merger between Skyline Builders and Cove Kaz Capital – would create a Nasdaq-listed entity, Kaz Resources, backed by up to $1.6bn in US federal support.
Coverage in the financial press has focused, understandably, on deal structure, political exposure and the expansion of Trump-linked business interests. That framing is not misplaced, but it leaves a more consequential industrial question underexamined: whether new mine supply can translate into usable tungsten outside China’s processing system.
On current evidence, that remains unresolved.
Cove Kaz’s core assets – the Northern Katpar and Upper Kairakty deposits – are described as the “largest known undeveloped tungsten resource globally”, with 1.4 million tonnes of tungsten trioxide and a combined production target of around 12,000 tonnes per annum.
That claim is technically defensible in resource terms but limited in practical value. Resource size does not determine economic viability, buildability or time to production. The projects remain pre-final investment decision, with a definitive feasibility study only expected to begin in the second half of 2026.
Industry commentary already points to their early-stage status and the substantial capital and time required to develop them. This implies multi-year timelines that extend well beyond near-term policy objectives.
Even at full capacity, the projects would enter a market where global tungsten mine output was approximately 85,000t in 2025, with China accounting for roughly 79% of supply, the Oregon Group reported. The additional volume is likely to be material but not sufficient to rebalance supply in the short term.
Structural constraint
The most critical weakness lies downstream.
The merger announcement presents Kaz Resources as an integrated supplier spanning upstream and downstream production. However, there is no disclosed evidence of refining or processing capacity.
Tungsten ore is not directly usable. It must first be chemically processed into intermediates such as ammonium paratungstate (APT), a high-purity compound from which powders, carbides and alloys are derived. This conversion involves multiple stages of dissolution, impurity removal and crystallisation, underscoring the technical and capital intensity of downstream processing, according to industry group Carbide Scrap Buyers.
China’s dominance extends across the entire tungsten value chain, controlling roughly 70–85% of processing stages, according to the Oregon Group. These stages convert mined concentrate into usable industrial and defence materials.
Without secured processing capacity, Kazakhstan-sourced tungsten would still depend on external – and in many cases Chinese – conversion routes. In that scenario, upstream diversification does not translate into supply chain independence.
The project has attracted substantial US backing including indicative financing from the Export-Import Bank and the US International Development Finance Corporation, reflecting a broader policy shift to underwrite non-China supply chains.
The Oregon Group notes that such intervention is occurring against a backdrop of sharply rising prices and a structurally tight market, with demand forecast to grow significantly and limited new supply in the pipeline.
However, capital availability does not materially compress development timelines. Tungsten projects typically require five to seven years to progress from advanced exploration to production, particularly when processing infrastructure must be developed in parallel.
This creates a mismatch with policy deadlines. The Oregon Group says US restrictions on sourcing tungsten from China, Russia, Iran and North Korea for defence applications are due to take effect from January 2027 – well before new Kazakh supply is likely to reach the market.
Industrial constraints
The Trump-linked deal reflects a broader attempt to reconfigure critical minerals supply chains through a combination of private capital and state support, in an attempt to reduce exposure to Chinese dominance in strategic materials.
However, tungsten illustrates the limits of that approach.
Mining is only the first stage in the value chain. Without parallel investment in refining, chemical conversion and advanced materials processing, new projects do not deliver supply chain control. They shift the point of extraction, not the locus of industrial capability.
The Kazakhstan assets may ultimately contribute meaningful volumes. In the near to medium term, however, they highlight a more immediate constraint: the bottleneck in tungsten is not geological but industrial.
Until that gap is addressed, claims of an “integrated supply chain” remain aspirational – and the designation of “largest undeveloped resource” remains, on its own, commercially incomplete.
