The Pentagon's investment in MP Materials marked the most significant U.S. intervention in the rare earth industry in decades. The deal established a domestic champion for one of the world's most strategically important supply chains and signaled Washington's willingness to commit federal financial resources to critical mineral production.

Mountain Pass, operated by MP Materials, is the only large-scale rare earth mine currently operating in the United States and ranks among the world's largest producers of light rare earths. Its ore is rich in neodymium and praseodymium (NdPr), the two elements that form the foundation of high-performance permanent magnets used in electric vehicles, industrial motors, and defense systems. The United States was once self-sufficient in rare earth production through the 1980s, but processing and refining capacity migrated to China over subsequent decades as lower costs and fewer environmental restrictions reshaped global supply.

The Heavy Rare Earth Challenge

The real challenge for the U.S. supply chain lies with heavy rare earths. Dysprosium and terbium are among the most strategically important heavy rare earth elements. They are added to permanent magnets that must operate under extreme temperatures, including those used in fighter aircraft, guided missiles, submarines, and advanced electric motors. China currently processes roughly 87% of the world's separated rare earth oxides and holds an even greater share of heavy rare earth separation capacity, making the gap in these specific elements particularly acute.

Mountain Pass is primarily a light rare earth deposit. While MP Materials has developed an SEG+ concentrate containing medium and heavy rare earths, additional sources of dysprosium- and terbium-bearing feedstock remain necessary to support large-scale domestic production of high-temperature permanent magnets.

This gap has forced the industry to look elsewhere for heavy rare earth feedstock, along with the separation, metallization, alloy production, and magnet manufacturing capacity needed to transform those materials into finished products. The next phase of growth in rare earths will likely come not from another Mountain Pass, but from companies supplying what Mountain Pass cannot — opening an entirely new competitive landscape. Australia's Lynas Rare Earths, the largest non-Chinese producer, is also expanding into heavy rare earth separation with U.S. government support, underscoring how narrow the field of potential Western suppliers remains.

REalloys Builds an Integrated Supply Chain

REalloys (NASDAQ:ALOY) is constructing that supply chain piece by piece. Over the past year, the company has assembled agreements spanning nearly every major stage of the industry, from heavy rare earth feedstock and separation to metallization and permanent magnet manufacturing.

On the feedstock side, REalloys owns 100% of the Hoidas Lake heavy rare earth mine in Saskatchewan, Canada, and holds a 15-year supply arrangement for rare earth concentrate from the Tanbreez Project, one of the world's largest rare earth deposits outside China. Additional agreements in Kazakhstan, Brazil, and the United States further diversify the company's future supply base, reducing reliance on any single jurisdiction or project.

Earlier this year, REalloys also secured long-term supply agreements with the Canadian government-run Saskatchewan Research Council (SRC) covering separated heavy rare earth oxides, including dysprosium and terbium.

Rare earth oxides, however, are not the final product. They must still move through metallization, alloy production, and magnet manufacturing before becoming usable components for the American defense and civilian economies. REalloys has addressed this stage as well. Earlier this week, the company signed a strategic agreement with permanent magnet manufacturer JS Link to develop one of the first fully integrated non-Chinese rare earth magnet platforms, bringing together feedstock, processing, metallization, and permanent magnet manufacturing under a single North American industrial strategy.

Government Contracts and National Security Priority

Washington has taken notice. In March, the Defense Logistics Agency (DLA) — which manages the National Defense Stockpile and serves as the combat logistics agency for the Department of Defense, NASA, and other federal agencies — awarded REalloys a contract worth up to $1.7 million to design a modular processing facility capable of producing 300 metric tons per year of samarium and gadolinium metals, positioning it among the largest domestic sources.

Samarium and gadolinium are used in high-temperature samarium-cobalt magnets for fighter aircraft, precision-guided weapons, radar systems, and other defense technologies. Reuters described the award as an "initial vote of confidence" in REalloys' technology from the agency responsible for procuring strategic materials for the U.S. military.

The contract also addressed one of the least appreciated weaknesses in the American rare earth industry: metallization, or alloying. Mining and separating rare earth oxides are only the beginning — those oxides must still be converted into metals before they can be manufactured into permanent magnets, and China has monopolized that segment of the global supply chain. The DLA award specifically supports development of REalloys' proprietary metallization technology, one of the least developed links in the U.S. rare earth supply chain.

The Pentagon's message grew more explicit two months later. In May, REalloys disclosed that it had received a Department of Defense memorandum identifying domestic heavy rare earth production as an urgent national priority ahead of the January 1, 2027 deadline banning Chinese-origin rare earth magnets from defense procurement. That deadline, established under amendments to the National Defense Authorization Act, effectively forces the Pentagon to source rare earth magnets and their components entirely from non-Chinese suppliers or risk losing access to critical weapon system components. The memorandum called for rapid expansion of domestic heavy rare earth processing, metallization, and magnet manufacturing — the same industrial capabilities REalloys had already begun assembling.

Tooele Army Depot: A First for U.S. Military Installations

In early July, the U.S. Army selected REalloys for exclusive negotiations to develop heavy rare earth processing facilities at the Tooele Army Depot in Utah. Under the proposed agreement, REalloys would finance, construct, and operate a commercial heavy rare earth processing complex under an Enhanced Use Lease structure. The Army would make land available while REalloys develops and operates the processing platform.

The complex is designed to receive heavy rare earth materials from allied and domestic suppliers and convert them into high-purity products for government and commercial customers. Initial commercial development is targeted for 2027, with operating capability expected no later than 2028. The project would make Tooele Army Depot the first U.S. military installation to host commercial heavy rare earth processing. Facilities are intended to produce materials for multiple federal agencies, including the U.S. Army, the Defense Logistics Agency, the Department of Energy, and NASA.

REalloys describes this as North America's "missing midstream" — the facilities that transform rare earth concentrates into high-purity metals, specialized alloys, and ultimately permanent magnets. That is where China built its global advantage, and where North America's capacity largely disappeared. REalloys is building what it calls the largest heavy rare earth metallization facility outside China, creating a new source of dysprosium and terbium metals for Western manufacturers. The end goal is to connect that metallization capacity to a fully integrated mine-to-magnet supply chain, with permanent magnet manufacturing targeted at up to 10,000 tonnes annually.

Broad Industrial Demand Beyond Defense

The potential customer base for a more resilient North American rare earth supply chain extends well beyond the defense sector. Tesla (NASDAQ:TSLA) relies on high-performance permanent magnets in many of its electric vehicle motors, while GE Aerospace (NYSE:GE) depends on rare earth materials for advanced jet engines and aerospace technologies where reliability under extreme conditions is essential. The European Union has also moved to secure non-Chinese rare earth supply through its Critical Raw Materials Act, which sets benchmarks for domestic sourcing of critical minerals — meaning demand for Western-produced rare earth materials is growing on multiple fronts simultaneously.

The technology sector also has a growing stake. Microsoft (NASDAQ:MSFT) is investing heavily in AI infrastructure that requires large amounts of electrical equipment, power systems, and advanced electronics containing critical minerals. Apple (NASDAQ:AAPL) has expanded recycling initiatives and diversified portions of its supply chain, but rare earth elements remain essential components across products ranging from iPhones and Macs to wearables.

Investor Momentum

The combination of national security urgency and a rapid cycle of deal-making and government contracts has created steady momentum. Just days before the U.S. Army announcement, REalloys secured approximately $100 million from institutional investors to accelerate construction, providing fresh capital to expand one of the most ambitious rare earth manufacturing platforms in North America.

Source: OilPrice.com. By Tom Kool.