NevGold's Limousine Butte project defines one of the largest domestic antimony resources. The metal is essential for ammunition and defense, but the U.S. currently imports nearly all of it from China.
A Nevada project just defined one of the largest domestic sources of a metal the U.S. military cannot produce at home and cannot fight without. The metal is antimony. It hardens the lead in bullets, goes into primers, flame retardants, and night-vision gear. The U.S. imports nearly all of its antimony, and China has already shown it can weaponize that dependency.
NevGold Corp. (TSXV: NAU) (OTCQX: NAUFF) owns the Limousine Butte project in Nevada, which carries both gold and antimony. The company has now defined a resource that, if developed, would give the Pentagon its first meaningful domestic supply of the metal in decades. For the defense contractors who buy antimony from global markets, the project represents a potential hedge against export controls that have already squeezed supply.
Why antimony became a national priority
China restricted antimony exports to the U.S. in late 2024, then partially eased controls in 2025. But licensing requirements and end-use scrutiny remain. The message was clear: Beijing can turn off the tap whenever it wants. For a metal the U.S. military needs for every round of ammunition, that is a vulnerability the Pentagon is now racing to address.
Antimony's role goes beyond ammunition. It is used in bearings, batteries, specialized glass, and flame retardants for electronics and textiles. It is also a critical ingredient in hardened projectiles and night-vision equipment. The U.S. Department of Defense has designated antimony a critical mineral, but domestic production sits at zero. Every ounce comes from abroad, most of it historically through China.
Who gets exposed
The companies that buy antimony for defense and industrial applications face the most direct supply risk. RTX Corporation (NYSE: RTX) builds missiles, munitions, and sensing systems that rely on antimony compounds. Honeywell International Inc. (NASDAQ: HON) uses the metal in flame retardants and specialty chemicals. GE Aerospace (NYSE: GE) and Axon Enterprise (NASDAQ: AXON) also have exposure through defense and law-enforcement products.
For these companies, a domestic antimony source would mean shorter supply lines, less geopolitical risk, and more predictable pricing. The alternative is continued reliance on imports that can be disrupted by export controls, shipping delays, or trade disputes.
What the NevGold project means
NevGold has not yet published a resource estimate for antimony at Limousine Butte, but the company has defined a large zone of antimony mineralisation alongside gold. The project sits in a mining-friendly jurisdiction in Nevada, close to existing infrastructure. If the company can demonstrate economic viability, it could become the first domestic antimony mine in years.
That timeline matters. Building a mine takes years, even under the best conditions. The U.S. government has tools to speed that up: the Defense Production Act can be used to fast-track critical mineral projects, and the Department of Energy has funding for domestic supply chains. But the clock is ticking. China's export controls are not going away, and global demand for antimony is rising as military stockpiles get rebuilt.
What would reduce the risk
The most direct way to reduce the antimony supply risk is to get a domestic mine into production. NevGold's project is the leading candidate. The company would need to complete a feasibility study, secure permits, and raise capital. If those steps happen, the U.S. would have a strategic source of antimony that cannot be cut off by foreign governments.
A second path is recycling. Antimony can be recovered from lead-acid batteries and industrial waste. Several companies are working on that, but the volumes are small compared to what the military needs.
What would make it worse
A full export ban from China would be the worst case. The U.S. has some antimony in the National Defense Stockpile, but those reserves are limited. Without a domestic mine, a total cutoff would force the Pentagon to ration ammunition or find expensive substitutes.
Delays at NevGold's project also carry risk. Permitting challenges, cost overruns, or a decline in antimony prices could slow the timeline. The company is still in the exploration stage, and there is no guarantee that the resource will be economic to mine.
The defense spend backdrop
The push for domestic antimony comes at a time when the U.S. is increasing defense spending and rebuilding ammunition stockpiles. The war in Ukraine showed how quickly modern armies burn through artillery shells and small-arms rounds. The Pentagon has said it needs to secure supply chains for critical materials. Antimony is near the top of that list.
For investors, the antimony story is a play on supply-chain reshoring and defense spending. RTX and Honeywell both have AlphaScores that reflect their mixed fundamentals. RTX scores 57 out of 100, a "Moderate" rating, while Honeywell comes in at 46, labeled "Mixed." Both sit in the Industrials sector and face similar exposure to materials supply.
The next catalyst
NevGold is expected to release a preliminary economic assessment for Limousine Butte later this year. That report will include the first detailed look at the antimony resource and the costs to develop it. If the numbers work, the project could attract strategic investment from the U.S. government or from defense contractors looking to secure supply.
Until then, the antimony market remains tight. China's export restrictions are still in place, and global prices have risen. The U.S. has no domestic production, and every day that passes without a mine is a day that the military's supply chain depends on Beijing.
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