Last Updated on 8 hours ago by TodayWhy Editorial
In the eastern Nevada desert, a mining company has just confirmed the largest known tungsten deposit in the United States — enough of a critical war-and-industry metal to end America’s decade of dependence on Chinese supply. There’s one problem. A third of it sits underneath land NASA has used for more than three decades, and the space agency isn’t giving it up.
Why is NASA blocking a $152 billion tungsten discovery? Not out of stubbornness. The same flat, empty desert that makes the site geologically rich also makes it one of the only places on Earth precise enough to calibrate the satellites that track hurricanes, droughts and climate change.
What 3PL actually found: a record tungsten deposit in Railroad Valley
Critical minerals company 3 Proton Lithium (3PL) says its Railroad Valley Minerals Project in Nye County holds an inferred tungsten resource of 1.78 million tonnes — more than five times the size of the next-largest known US deposit. At current prices, the company values the in-situ tungsten at roughly $152 billion.
Tungsten isn’t the only find. The same underground brine system also contains an estimated 31 million tonnes of lithium carbonate equivalent — potentially one of the largest lithium resources in North America — along with large deposits of potash and boron. Potash is a fertilizer input the US almost entirely imports.
“This is not a mining story,” 3PL chairman and chief financial officer Kevin Moore said in a statement. “It is a national security story.”
Why tungsten specifically matters so much right now
Tungsten has the highest melting point of any metal — 3,422 degrees Celsius — along with the highest tensile strength of any metal and a density greater than lead. Those properties, which once made it the standard filament for incandescent light bulbs, are exactly what make it essential for armor-piercing rounds and high-heat weapons components today.
Demand has surged for a specific reason: sustained conflict with Iran has burned through large stockpiles of tungsten-containing munitions, including Tomahawk cruise missiles. A February 2026 US Geological Survey report found that American tungsten production was effectively negligible in both 2024 and 2025, while China mined roughly 67,000 tonnes each of those years — about 80 percent of the world’s supply. Tungsten prices have climbed nearly 600 percent since early 2025.
The US did not always depend on imports this way. Domestic tungsten mining largely ended about a decade ago, priced out by cheaper Chinese supply, until the current supply squeeze made a domestic source valuable again almost overnight.
Why NASA needs this exact patch of desert
Railroad Valley isn’t a random restricted zone. According to Scientific American, NASA has used the site’s dry lake bed to calibrate Earth-observing satellite instruments for at least 33 years. In 2023 the Bureau of Land Management formally granted NASA exclusive use of roughly 92 square kilometers there, closing it to any other public or private use for 20 years.
NASA’s own description of the site explains why substitutes are hard to find: the lake bed is large, flat, free of vegetation, a consistent surface color, undisturbed, easy to access, and clearly visible from orbit. Technicians know precisely how much sunlight the surface should reflect at any given moment, which lets them verify that a satellite’s optical sensors are reading light accurately. Disturb the surface with roads, drill pads, or dust, and that built-in accuracy reference is degraded, potentially for years.
Three active missions rely on the calibration site: Landsat, which monitors land and water resources; Suomi NPP, a weather and climate observation satellite; and EMIT, which tracks the mineral dust that blows across the planet and affects climate models.
Why this isn’t the first clash over this land
This is round two, not round one. In 2023, 3PL sought access to the same restricted zone after finding a lithium deposit there — and NASA held its ground. The tungsten discovery, which the company says surprised even its own geologists, has reopened the same fight with much higher financial and strategic stakes attached.
3PL argues the original 2023 land withdrawal was approved before regulators understood the true scale of what sits beneath it, and the company is now pressing the Trump administration and Congress to reverse the restriction. NASA’s public position, as of early August 2026, is unchanged.
Why extraction here wouldn’t look like a typical mine
Even setting the NASA dispute aside, 3PL isn’t proposing an open-pit mine. The minerals sit dissolved in brine roughly 366 to 853 meters underground, and the company plans to use solution mining: pumping fluid down to dissolve the minerals, then bringing the resulting brine to the surface for processing.
That approach needs only around 80 acres of surface facilities and avoids the open pits, waste rock piles, and acid processing plants associated with conventional hard-rock mining. It’s a detail that matters for the environmental side of the NASA dispute — the footprint is smaller than a traditional mine, even though the underlying land-use conflict remains the same, since even limited roads and drilling pads can still disturb the calibration surface.
What happens next
The Trump administration has placed Railroad Valley under the FAST-41 federal permitting program, designed to speed up reviews for infrastructure and critical minerals projects, and is separately weighing up to $1.6 billion in support for a competing tungsten mine in Kazakhstan to diversify supply away from both China and this single contested site.
Even if the land dispute is resolved entirely in 3PL’s favor, analysts caution that commercial tungsten production at Railroad Valley remains at least five years away, given the additional drilling, environmental review, and permitting still required. For now, roughly a third of one of the most significant mineral discoveries in recent US history remains legally untouchable — not because anyone doubts its value, but because a different part of the government has already decided the empty desert above it is valuable too.
Frequently asked questions
How big is the Nevada tungsten discovery?
3PL estimates an inferred resource of 1.78 million tonnes of tungsten, more than five times the next-largest known US deposit, worth roughly $152 billion at current prices — and that figure excludes the portion of the deposit still blocked from exploration.
Why does NASA control part of the land?
NASA has used Railroad Valley’s dry lake bed to calibrate Earth-observing satellite instruments for over 30 years. In 2023 the Bureau of Land Management granted NASA exclusive use of about 92 square kilometers of the site for 20 years, specifically to protect the surface from disturbance.
What satellites depend on this calibration site?
Landsat, Suomi NPP, and EMIT are the three active missions Scientific American identified as relying on Railroad Valley’s calibration data, covering land and water monitoring, weather and climate observation, and atmospheric dust tracking.
Why is tungsten suddenly this valuable?
China produces about 80 percent of the world’s tungsten, and prices have risen nearly 600 percent since early 2025 amid tighter Chinese supply and heavy military demand, including munitions used in the ongoing conflict with Iran. US domestic production was effectively negligible in 2024 and 2025.
Has 3PL fought NASA over this land before?
Yes. In 2023, the company sought access to the same area after discovering a lithium deposit, and NASA’s restriction held. The current tungsten dispute is a second round of the same underlying conflict.
When could this tungsten actually reach the market?
Analysts estimate at least five years, even in the most favorable scenario where the NASA land dispute is resolved quickly, given the additional drilling, environmental review, and permitting still needed before production could begin.