The Montana Environmental Quality Council has formally asked the U.S. Department of Defense for help turning some of the state’s most notorious legacy mining sites—including Butte’s Berkeley Pit and the Anaconda smelter waste complex—into hubs for recovering rare earths and other critical minerals, a proposal advanced in a 14–1 vote at the council’s 2 December meeting in Helena.
Approved amid bipartisan agreement and a single dissent, the request positions Montana as a contender for federal research dollars the Pentagon sets aside each year to bolster domestic supplies of strategically important metals. Council members submitted their appeal in a letter addressed to Defense Secretary Pete Hegseth, seeking money from the Army’s Research, Development, Test and Evaluation budget to underwrite pilot extraction projects.
Montana’s pitch arrives at a moment when Washington is urgently trying to shrink its dependence on overseas sources of materials essential to everything from electric vehicles and wind turbines to night-vision goggles and guided missiles. By focusing on waste rock, tailings and acidic mine water already on the ground, state officials say they can help meet that national security goal without blasting new open pits or sinking new shafts.
The proposal hinges on a straightforward idea: use modern separation techniques to pull metals such as zinc, copper, cobalt, nickel and a suite of rare earth elements out of the billions of gallons of contaminated water in the Berkeley Pit and the hundreds of millions of tons of slag and tailings at Anaconda and other sites. If successful, supporters argue, the effort could transform long-troubled landscapes into economically productive assets while reducing future cleanup liabilities.
During last week’s hearing, Montana Mining Association director Matt Vincent framed the opportunity in stark numbers. “There are billions of gallons of metals in the Berkeley Pit’s water and hundreds of millions of tons of smelter waste containing appreciable levels of critical minerals,” he told lawmakers, adding that Montana Tech studies suggest recovery of up to 40 tons of rare earth elements a year from the pit alone. Those figures, he said, could grow as metallurgists refine extraction techniques.
Five priority sites, wide-ranging metals
The council’s letter—shaped over several hours of discussion—identifies five initial targets for federally funded demonstration work:
• Berkeley Pit, Butte
• Anaconda smelter waste complex
• Sibanye-Stillwater mine near Nye
• Black Butte copper project south of Great Falls
• Antonioli-Contact mine outside Phillipsburg
At each location, project engineers would test the feasibility of concentrating elements that the U.S. Interior Department lists as “critical” to national security or economic vitality. Alongside rare earths, the Montana plan highlights germanium, antimony, bismuth, tungsten and manganese, metals now imported mainly from China or Russia.
Although the council left open the possibility of expanding to other legacy sites later, members voted to include the specific list in the funding request to avoid confusion over scope. That change came after Rep. Josh Seckinger, R-Bozeman, warned that vague language might inadvertently endorse new mining ventures rather than reclamation-based recovery.
“It’s really important that we focus on places where we already have a disturbance,” Seckinger said, noting that many Montanans remain wary of proposals that could lead to additional surface impacts. A clearer proposal, he argued, would stand a better chance with federal reviewers and with the public.
Environmental voices cautiously supportive
Public testimony reflected measured optimism. Julia DalSoglio of the Montana Sierra Club said repurposing existing mine waste “is an intriguing concept,” but urged the council to ensure strong oversight so experimental processes do not exacerbate pollution problems. The Montana Environmental Information Center echoed that view, applauding the narrower focus on defined sites and calling for continued transparency as the plan advances.
Council members adopted several tweaks in response, including language stating that any pilot projects must comply with existing Superfund cleanup agreements and water-quality standards. They also pledged to keep state regulators informed of technological changes that could affect environmental performance.
Federal context and strategic timing
The timing of Montana’s request is deliberate. Congress has lately channeled hundreds of millions of dollars into the Defense Production Act and the Bipartisan Infrastructure Law to accelerate domestic sourcing of battery and defense-grade minerals. Those programs prioritize projects that can deliver supply quickly with minimal environmental impact—criteria the council believes favor re-mining tailings and pit water already containing high metal concentrations.
According to the Daily Montanan, the Environmental Quality Council’s letter asks the Pentagon to treat Montana’s proposal as an “extraction demonstration project” eligible for multi-year RDT&E support and any complementary programs that encourage critical-mineral recycling from waste streams Daily Montanan.
If approved, federal funds would flow first to engineering studies that test resin-based adsorption, solvent extraction and bioleaching technologies in small-scale field modules. Positive results could unlock larger appropriations for commercial-scale facilities, potentially run by private operators under state or federal leases.
Technical promise and remaining hurdles
Montana Tech metallurgists cited by Vincent have demonstrated in lab settings that rare earths dissolved in the Berkeley Pit’s acidic water can be selectively captured with ion-exchange resins. The challenge lies in doing so at industrial volumes while handling roughly 7 million gallons of water that flow into the pit each month. Researchers must also deal with high concentrations of iron, aluminum and arsenic that can foul membranes and resins.
At the Anaconda smelter site, where the EPA oversees a massive Superfund cleanup, slag piles contain elevated levels of copper, cobalt and antimony embedded in glassy matrices. Crushing and milling that material to liberate the metals would create dust and additional waste, so engineers are experimenting with microwave pre-treatment and bacterial leaching to loosen the crystalline bonds without extensive grinding.
Cost remains another unknown. While rare earth oxides can sell for thousands of dollars per metric ton, processing technologies are energy-intensive, and fluctuating commodity markets could undercut returns. Council staff acknowledged that economic modeling will be a core element of any Pentagon-funded feasibility study.
Balancing opportunity and caution
For Montana policymakers, the proposal represents both a chance to diversify the state’s extractive economy and a test of whether technology can meaningfully reduce some of mining’s historical scars. Supporters highlight the potential to create high-wage jobs in Butte, Anaconda and other communities that have seen decades of layoffs as copper and precious-metal production waned.
Critics, however, note that earlier waves of technological optimism—from heap-leach gold operations in the 1980s to cyanide remediation promises in the 1990s—did not always deliver as advertised. “We’ve learned painful lessons about taking industry forecasts at face value,” DalSoglio reminded the council. She urged lawmakers to build independent verification into every phase of the project.
Next steps
With the letter now on its way to the Pentagon, the Environmental Quality Council expects an initial response by spring. Staff said the Department of Defense typically reviews RDT&E proposals during its annual budget cycle, meaning any funding would likely appear in the federal fiscal year that begins 1 October 2026. In the meantime, state agencies are compiling data packages on water chemistry, tailings composition and existing permits to streamline environmental reviews should money arrive.
Gov. Greg Gianforte’s office has not yet weighed in on the plan, but administration officials previously signaled support for “innovation that turns environmental liabilities into assets.” Attorney General Austin Knudsen, a vocal advocate for critical-mineral independence, is expected to back the request as well.
Analysis: a measured gamble on legacy sites
Montana’s bid underscores a broader shift in U.S. critical-mineral strategy: rather than racing to green-field mines that can take a decade to permit, policymakers are looking at waste piles and pit lakes as near-term resources. If technology proves economical, such projects could supply metals with a smaller physical footprint and without opening sensitive wilderness or ranchland to new disturbance.
Yet the plan carries real risk. Extraction processes that work in a lab can falter when scaled up, and separating value metals from a complex mix of contaminants could generate additional waste streams requiring disposal. The interplay between Superfund cleanup requirements and profit-driven recovery will demand vigilant oversight to prevent conflicts of interest.
Still, for communities like Butte—where the Berkeley Pit has loomed as both a symbol of industrial might and an environmental burden—the prospect of turning toxic water into strategic supply offers a meaningful narrative shift. Success would not erase a century of mining’s externalities, but it could demonstrate that remediation and resource recovery need not be mutually exclusive.
As Washington weighs Montana’s request, the outcome may signal how aggressively the federal government intends to back innovative approaches that blur the line between cleanup and mining. In that sense, the Environmental Quality Council’s letter is more than a funding pitch; it is a test case for the next chapter of American resource policy.
Sources
- https://dailymontanan.com/2025/12/04/eqc-requests-funding-for-rare-earth-and-critical-mineral-extraction-from-existing-mining-sites/
