The Largest Tungsten Deposit Has Been Discovered In The U.S.

$152 billion.

The largest tungsten deposit in the U.S., valued at approximately $152 billion, has been discovered in Nevada, but its development may face an obstacle due to a NASA ban on mining in part of the area. This was reported by Financial Times reports, citing data from the developer, 3 Proton Lithium (3PL).

Based on the results of recent drilling, the company estimates the resources of the Railroad Valley Minerals Project in eastern Nevada at 1.78 million metric tons of tungsten. At current prices, the deposit is valued at approximately $152 billion. Lithium, boron, and potash have also been discovered in the underground salt deposits there.

Kevin Moore, Chairman and CFO of 3PL, emphasized that the project is of strategic importance, as the U.S. ceased tungsten production about ten years ago and now relies on imports.

The main challenge is that the approximately 44-square-kilometer site is inaccessible for development due to a 20-year mining ban imposed in 2023 by the Bureau of Land Management at the request of NASA, which uses the area to calibrate satellite instruments and track signals.

According to Moore, his company is negotiating to lift NASA’s restrictions, including at the congressional and White House levels, but the agency’s position remains unchanged. However, Eurasia Group analyst Timothy Puko warned that even if the dispute over land access is resolved, commercial development will take at least five years.

The discovery of the deposit coincided with a sharp rise in tungsten prices—nearly 600% since February 2025 — driven by demand from the aerospace, defense, and tool industries, as well as export restrictions imposed by China, which controls about 80% of the global market for this metal.

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