Mountain Pass Mine: The Mine China Almost Took

Mountain Pass is the California mine at the center of the rare earth story Matt McCall tells in his “Trump’s $16 Trillion Chess Move” presentation, and its history is the pitch’s strongest evidence that China’s mineral dominance is not a future threat but a completed fact. The mine has been the only significant U.S. rare earths producer for decades, and its near-death experience in the 2010s is the lesson McCall builds the pitch’s urgency on. Our “What Is Trump’s $16 Trillion Chess Move? McCall Decoded” article covers the details.

Here is the real Mountain Pass story, and why it anchors the case for America’s critical minerals scramble.

The Rise

Mountain Pass, in the Mojave Desert near the Nevada border, was discovered in 1949 and became the world’s dominant rare earth producer through the second half of the twentieth century. At its peak, the mine supplied the majority of the world’s rare earths. The deposit’s bastnaesite ore carries a rich mix of the seventeen elements that make modern technology possible, from the neodymium in magnets to the europium that colored older televisions.

The world’s electronics were built on Mountain Pass output, and for a generation, rare earth supply was an American story.

The Fall

Two forces ended that era, and the pitch dramatizes both. First, the economics: China entered the market in the 1980s and 1990s with dramatically lower processing costs, and by the mid-1990s was executing the strategy its leadership had declared openly. The pitch quotes the line attributed to Deng Xiaoping in 1992: “There is oil in the Middle East. There’s rare earth in China.” Second, the environment: Mountain Pass suffered a wastewater pipeline spill in the late 1990s and suspended processing operations; combined with Chinese price pressure, the mine shut entirely in 2002.

The USGS production chart McCall cites shows the collapse plainly: U.S. share of world rare earth production went from dominant to effectively zero within two decades, while China’s refining share climbed to roughly 90%, where it sits today. The mine reopened in 2012 under new ownership, went through bankruptcy in 2016, and now operates under MP Materials, which received the government’s pioneering strategic investment (the DoD deal that preceded the Lithium Americas, Trilogy Metals, and USA Rare Earth stakes in McCall’s chain).

The Rebirth, and What It Cost

The mine’s second act is as instructive as its fall. Restarted in the 2010s under new ownership, Mountain Pass went through bankruptcy in 2016, a reminder that strategic assets do not automatically make good investments; the capital structure and the balance sheet still decide who survives the commodity cycles. The turnaround came when the operation was consolidated under MP Materials with a vertically integrated plan: mine the ore, then rebuild separation capacity on site, then extend into metal, alloy, and magnet production, the high-value steps China actually dominates. The Department of Defense’s stake and price-floor arrangements followed the strategy, not the geology. The lesson for anyone evaluating the pitch’s deep-sea pick: government money favors companies that have already done the hard part of building capability, not companies that merely own rocks.

Why the Pitch Leans on It

Mountain Pass is the proof case for the pitch’s central fear, dependence: “the entire American war machine and the entire American economy currently runs on minerals controlled by our single greatest adversary,” with “every F-35 stealth fighter” containing “900 pounds of rare earth minerals.” The mine’s history demonstrates three propositions at once: the U.S. once dominated this industry, it lost it in roughly twenty years, and rebuilding it is being done deal by deal, with government money (the equity stakes) and government mandates (export-control responses and the defense supply-chain deadlines the pitch dramatizes as a January 1, 2027 cutoff).

From that foundation, the pitch’s main event follows: Executive Order 14285, the polymetallic nodule deposits of the Pacific (“the largest single concentration of critical minerals ever discovered anywhere on Earth,” per the pitch), and the roughly-$5 company McCall says holds the harvesting rights and the only U.S.-flagged vessel. Our The Metals Company fingerprint piece covers the identification evidence, and our deep-sea mining explainer covers the deposit and technology.

The Honest Read

Mountain Pass’s history is accurately told and genuinely instructive: mineral dominance can be lost quickly and rebuilt only slowly and expensively. That is a fair foundation for a critical-minerals investment thesis. The gap between the lesson and the trade is where the scrutiny belongs: the lesson says domestic rare earth capacity is strategically vital, while the pitch’s specific pick (seabed nodules rather than terrestrial mining) is a newer, less proven corner of that story, and the government-stake pattern it invokes is, in McCall’s own words, not a promise: “Nobody knows for sure if Trump will ultimately back this company. Nothing is final until that ink is dry.” Our “Mountain Pass Mine Stock: The California Rare Earth Story” article covers the details.

For the presenter’s record, see our profile of Matt McCall; for the sibling Oxford Club campaign, our XAI Boom review.

The full presentation is available through this link.

Mountain Pass earned its place in the pitch honestly: it is the mine that proves the stakes. What you do with that proof, and which corner of the critical-minerals story you bet on, is the decision the history lesson sets up but cannot make for you.

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