The Pentagon has launched its most aggressive critical mineral stockpiling campaign in decades, backed by $7.5 billion in new funding. With contracts already awarded for antimony, cobalt, tantalum, and scandium, and a landmark $400 million equity stake in MP Materials, the initiative marks a fundamental shift in how the U.S. military secures access to the materials underpinning modern defense systems.
From Complacency to Urgency
For much of the post-Cold War era, the United States allowed its National Defense Stockpile to atrophy. Inventory values declined from over $10 billion in the early 1990s to under $1 billion by 2021, as successive administrations liquidated reserves and relied on global markets (and increasingly on Chinese supply) for critical materials.
That posture has reversed sharply. China's escalating export controls on gallium, germanium, antimony, and rare earths, culminating in a direct ban on sales of several materials to U.S. buyers in December 2024, exposed the fragility of supply chains that defense planners had long taken for granted. The Pentagon's response has been the largest expansion of the National Defense Stockpile since the Korean War era.
The Funding Architecture
The One Big Beautiful Bill Act, signed in July 2025, provided the legislative backbone for the expansion. The law authorized $7.5 billion in total funding across several mechanisms.
The National Defense Stockpile Transaction Fund received $2 billion for direct mineral purchases, with deployment expected from late 2026 through early 2027. An additional $5 billion was allocated to the Industrial Base Fund for supply chain investments spanning mining, processing, and refining capacity. The Office of Strategic Capital received $500 million for loans and loan guarantees to critical mineral companies, and $1 billion was designated for Defense Production Act Title III financing to support domestic production.
Separately, roughly $1 billion in existing appropriations was allocated for immediate stockpile procurement in 2025 and 2026, allowing the Pentagon to begin purchasing before the larger funding streams become available.
Contracts Awarded and Pipeline
The Department of Defense has moved quickly to convert funding into contracts. The largest announced procurement is up to $500 million for cobalt from multiple suppliers, securing material essential for jet engine superalloys and battery applications.
Antimony, which China effectively banned from export to the United States in December 2024, received $245 million in contracts. US Antimony Corporation will process ore from its Alaska operations at its Montana refinery, establishing a fully domestic supply chain for a material critical to munitions primers, case-hardening alloys, and flame retardants.
Other contracts include $100 million for tantalum (used in missile systems and aerospace components), $45 million for scandium from Rio Tinto and APL Engineered Materials, and a combined $150 million contract with Global Advanced Metals for tantalum and niobium. Requests for information or proposals have been issued for tungsten, graphite, indium, bismuth, vanadium, and fluorspar.
The scope is notable for its breadth. The NDS is now targeting 16 rare earth elements, and the Pentagon has sought 222 tonnes of indium, representing approximately 88 percent of total 2024 U.S. consumption of the metal.
The MP Materials Partnership
Perhaps the most significant strategic move has been the Pentagon's decision to take a direct equity position in MP Materials, the operator of the Mountain Pass mine in California, which is the only active rare earth mining operation in the United States.
The Department of Defense invested $400 million for a 15 percent equity stake, making it MP Materials' largest shareholder. The deal also includes $1 billion in loan guarantees to support the company's planned 10X magnet manufacturing facility in Texas, and a 10-year offtake agreement with guaranteed floor pricing.
The partnership represents a departure from the Pentagon's traditional procurement model, in which the government buys finished goods from private companies at arm's length. By taking an ownership stake and providing price guarantees, the DoD is effectively underwriting the development of a domestic rare earth supply chain that would struggle to compete with Chinese producers on cost alone.
MP Materials had already made its own strategic pivot in August 2025 by halting raw material shipments to China and redirecting output to its domestic refining operations. The decision triggered a 40 percent spike in Chinese NdPr prices but signaled a permanent shift in the company's orientation away from the Chinese processing ecosystem.
China's Export Control Escalation
The stockpile expansion is a direct response to China's increasingly aggressive use of export controls as a tool of strategic competition. The timeline of escalation has been rapid.
China imposed licensing requirements on gallium and germanium exports in August 2023, extended controls to graphite in October 2023, and added antimony and superhard materials in August 2024. In December 2024, Beijing banned exports of gallium, germanium, and antimony to U.S. buyers outright. Rare earth controls followed in April 2025, covering seven medium and heavy rare earth elements, and were extended to rare earth processing technology and equipment in October 2025.
A partial suspension of the gallium, germanium, and antimony ban was negotiated in November 2025, lasting through November 2026, but the military end-use prohibition remains in effect and the licensing framework continues to restrict trade flows. The suspension is widely viewed as fragile, with China retaining the ability to reimpose stricter controls at any time.
The pattern is clear: China controls dominant shares of global production for many of these materials (roughly 70 percent of gallium, 60 percent of germanium, significant shares of antimony and processed rare earths) and has demonstrated willingness to leverage that position in response to U.S. technology restrictions.
Implementation Challenges
The scale of ambition is not matched by the speed at which physical supply chains can be built. Mining projects typically require five to fifteen years from discovery to production, and processing facilities need three to five years for permitting and construction even when financing is available.
The immediate stockpile purchases will rely heavily on non-Chinese allied sources (Australia, Canada, and select African producers), third-country inventories, and recycled materials. Building genuinely domestic production capacity for many of these materials will take the better part of a decade.
There are also questions about whether the stockpile targets are calibrated correctly. The DoD has not publicly disclosed the volume targets for most materials, making it difficult for outside analysts to assess whether the $7.5 billion in funding is sufficient, excessive, or appropriately sized for the threat environment.
Workforce constraints add another layer of complexity. The United States has a limited pool of trained mining engineers, metallurgists, and rare earth chemists, and rebuilding that human capital base will take years of investment in education and training programs.
Outlook
The stockpile expansion will be a multi-year procurement program that reshapes relationships between the Pentagon, the mining industry, and allied governments. In the near term, the most visible effects will be in antimony and rare earth markets, where U.S. government purchases represent a material share of global non-Chinese supply.
For the critical minerals industry, the program provides a floor of demand and pricing certainty that de-risks investment in domestic and allied production. For the broader geopolitical landscape, it signals that the United States has accepted that resource competition with China is a long-term structural feature of the international system, not a temporary disruption to be managed through diplomacy alone.
Whether the funding survives future budget cycles and political transitions will be the ultimate test. Stockpile programs have historically been vulnerable to drawdowns during periods of fiscal pressure or strategic complacency. The current bipartisan consensus on critical mineral security appears robust, but sustaining a multi-billion-dollar procurement program through a full decade of implementation will require political will that matches the scale of the challenge.
