Apple and the Pentagon Are Betting on Americas Only Rare Earth Producer — and It Could Reshape the Global Supply Chain

For decades, the United States ceded control of one of the most consequential industrial supply chains on the planet. Rare earth elements — the obscure but essential inputs that make modern electronics, electric vehicles, and precision weapons possible — were mined, processed, and manufactured into finished components almost entirely in China. Now, a California-based company called MP Materials is at the center of a coordinated effort by both Silicon Valley and the Pentagon to change that — and it just reached a milestone that makes the ambition feel, for the first time, genuinely achievable.

MP Materials recently announced that it has begun producing neodymium-iron-boron (NdFeB) permanent magnets — the powerful, compact magnets found in smartphone speakers, haptic engines, electric motors, and missile guidance systems. The announcement is not merely a corporate achievement. It represents the completion of a supply chain that the United States has not possessed in any meaningful form for the better part of three decades.

What „Fully Integrated“ Actually Means — and Why It Matters

The phrase „fully integrated rare earth producer“ is easy to gloss over, but its significance is hard to overstate. The rare earth supply chain has four distinct and technically demanding stages: mining and concentration, chemical separation into individual oxides, conversion into metals and alloys, and finally the manufacturing of finished permanent magnets. Most Western companies, if they operate in this space at all, participate in only one or two of these stages. The rest has historically happened in China.

MP Materials owns and operates the Mountain Pass mine in the Mojave Desert of California — the only large-scale rare earth mining and processing operation in North America. The company, which acquired the site out of Molycorp’s 2015 bankruptcy and restarted operations, has been systematically building out each stage of the value chain. For years, it exported rare earth concentrate to China for further processing — a pragmatic but strategically uncomfortable arrangement. According to the company’s 2023 annual report filed with the SEC, MP has been developing what it describes as „a fully integrated U.S. supply chain for rare earth magnets.“ The commencement of NdFeB magnet production means that description is no longer aspirational — it is operational.

Mountain Pass sits atop one of the world’s largest known rare earth deposits, particularly rich in light rare earths like neodymium and praseodymium — the specific elements most critical for permanent magnet manufacturing. According to the U.S. Geological Survey’s 2024 Mineral Commodity Summaries, the United States remains almost entirely dependent on foreign sources for the processing and magnet manufacturing stages of the rare earth chain, making MP’s vertical integration a rare and significant departure from the status quo.

Apple’s Strategic Wager on Domestic Supply

Among MP’s most prominent commercial backers is Apple. In December 2021, Apple announced that it would source key rare earth materials from a new U.S.-based magnet manufacturing facility being built by MP Materials in Fort Worth, Texas. Under the long-term supply agreement, MP will provide Apple with NdFeB magnets made from Mountain Pass rare earths — magnets that end up inside iPhones, powering everything from the Taptic Engine to the speaker array.

For Apple, the calculus is both practical and political. The company uses rare earth magnets extensively across its product line, and until now, the overwhelming majority of those magnets have been produced in China. A domestic supplier insulates Apple from the kind of export restrictions and geopolitical disruptions that have become a recurring feature of U.S.-China trade relations. It also gives Apple a credible answer to growing pressure from Washington and investors over the resilience — and ethics — of its supply chain.

There is an ESG dimension as well. Apple’s Environmental Progress Report 2024 outlines the company’s commitment to responsible sourcing of critical materials. A traceable, domestically produced rare earth supply, subject to U.S. environmental regulations, aligns far more neatly with those commitments than sourcing from overseas operations with less regulatory oversight. Apple has framed the arrangement as part of its broader effort to support clean energy and domestic manufacturing — language that resonates in Washington as much as it does in Cupertino.

The Pentagon’s Investment: Rare Earths as a National Security Imperative

If Apple’s involvement reflects corporate supply chain strategy, the Pentagon’s engagement reflects something more urgent. The U.S. Department of Defense has explicitly identified rare earth elements and NdFeB magnets as critical to national security. Permanent magnets are embedded in precision-guided munitions, radar and sonar systems, electric motors in aircraft and naval vessels, and the guidance and control systems of a wide range of military hardware. Dependence on a single foreign nation — and a geopolitical rival at that — for these inputs represents a vulnerability that defense planners have been trying to address for years.

The DoD has backed MP Materials at multiple stages of its development. In November 2020, the department awarded MP Materials $9.6 million under the Defense Production Act Title III program to design and build a facility to restore domestic heavy rare earth separation capacity. In February 2022, the Pentagon went further, awarding an additional $35 million to support the design and construction of the Fort Worth magnet manufacturing facility — directly linking the investment to reducing U.S. reliance on Chinese rare earth supply chains.

The Defense Production Act, most commonly invoked during wartime or national emergencies, gives the federal government authority to direct industrial capacity toward national security priorities. Its deployment here signals how seriously the DoD treats rare earth dependency — not as a long-term structural concern to be managed gradually, but as an active vulnerability requiring immediate industrial remedy.

China’s Grip — and Why It’s So Hard to Break

To understand what MP Materials is up against — and what Apple and the Pentagon are trying to solve — it helps to appreciate just how completely China came to dominate this supply chain. China currently accounts for the vast majority of global rare earth mining output, an even larger share of separation and processing capacity, and dominates the manufacturing of finished NdFeB magnets. This dominance was not accidental. It was the result of deliberate industrial policy, lower environmental compliance costs, and decades of investment in technical expertise that the West largely chose not to replicate.

When Molycorp — the predecessor operator of Mountain Pass — went bankrupt in 2015, it was in part a casualty of that competition. Chinese rare earth prices were suppressed to levels that made Western production uneconomical. The United States was left, for a period, with essentially no domestic rare earth production at all. The U.S. Geological Survey has long documented this dependency, but documentation and action are different things. MP Materials‘ current trajectory represents one of the first serious attempts to act.

China has also demonstrated a willingness to use rare earth supply as a geopolitical lever. Export restrictions and licensing requirements have been deployed in trade disputes before, and the concentration of processing capacity in a single country creates systemic fragility for any nation that depends on it — particularly one that is simultaneously a military and technological competitor.

Fort Worth and the Emerging Domestic Magnet Industry

The Fort Worth facility, built with a combination of private capital, Apple’s offtake commitment, and Pentagon funding, is where the strategic ambitions of all these parties converge. It is here that Mountain Pass ore — mined in California, separated into individual oxides, and processed into metal alloys — is being manufactured into finished NdFeB permanent magnets destined for both consumer electronics and, eventually, defense applications.

The facility also positions MP Materials within the broader industrial policy landscape that has reshaped U.S. manufacturing investment since 2021. The Inflation Reduction Act, the CHIPS and Science Act, and the Biden and Trump administrations‘ executive actions on critical minerals have created a policy environment that explicitly rewards domestic production of strategically sensitive materials. MP sits at the intersection of all these priorities — it is simultaneously a clean energy play, a defense asset, and a technology supply chain solution.

Risks and Realities

None of this means the challenge is solved. MP Materials is one company, operating one mine, building out capacity that China has spent decades scaling. The technical complexity of rare earth separation and magnet manufacturing is formidable, and achieving the kind of cost competitiveness that would allow U.S.-made magnets to win on price — rather than merely on national security grounds — remains a significant hurdle.

There is also the question of heavy rare earths. Mountain Pass is rich in light rare earths like neodymium and praseodymium but has more limited exposure to heavy rare earths such as dysprosium and terbium, which are used to improve the performance of NdFeB magnets at high temperatures — critical for some defense and automotive applications. Those heavy rare earths are found in greater abundance in deposits concentrated in China and parts of Africa, meaning full supply chain independence for all magnet grades remains a more distant goal.

And while the Apple and Pentagon partnerships provide crucial financial and strategic anchors, MP will need to continue expanding its customer base, scaling production, and proving that a domestic, vertically integrated rare earth business is economically sustainable without perpetual government support.

A Structural Shift, Not Just a Business Story

Despite those caveats, what MP Materials has now achieved — a functioning, end-to-end rare earth supply chain on U.S. soil, producing finished magnets from domestically mined ore — is genuinely without precedent in the modern era. The combination of a committed commercial anchor in Apple, sustained defense funding from the Pentagon, and a resource base at Mountain Pass gives the company a foundation that its predecessor, Molycorp, never had.

Whether this marks the beginning of a durable reshaping of the global rare earth supply chain, or an expensive but ultimately insufficient island of domestic capacity in a sea of Chinese dominance, will depend on execution, policy continuity, and whether other parts of the magnet supply chain — from recycling to heavy rare earth processing — can be similarly rebuilt. But the bet is now placed. Apple, the Pentagon, and MP Materials have each staked something real on the proposition that America can rebuild a supply chain it once let go — and that doing so is worth the cost.