US Antimony Processing Plant in Idaho Strengthens North American Sb Supply Chain

Americas Gold and Silver

The US antimony processing plant planned in Idaho marks a significant step for North American critical minerals security. US Antimony and Americas Gold and Silver formed a joint venture to develop a hydrometallurgical antimony facility at the Galena complex in Idaho. The project links local feedstock, processing capacity, and downstream marketing. As a result, the US antimony processing plant could strengthen domestic supply for both industry and defense.

This matters because antimony remains a strategically sensitive metal with limited western processing capacity. Americas will sell antimony feedstock from Galena to the joint venture for processing. US Antimony will then purchase the antimony produced at the plant. Therefore, the US antimony processing plant creates a more integrated domestic flow from mine to refined product.

The structure of the partnership also looks deliberate. Americas will own 51pc of the venture, while USAC will hold 49pc. Feed from the Galena site will receive priority, although the facility may also accept other sources later. Consequently, Idaho antimony processing could become a flexible platform rather than a single-mine solution.

Idaho Antimony Processing Builds on Existing USAC Expertise

Idaho antimony processing gains credibility because USAC already has operating experience in this market. The company runs the only two antimony smelters in North America, including the Thompson Falls facility in Montana. It also said earlier this year that it helped develop a hydrometallurgical antimony facility in Bolivia. As a result, the joint venture starts with more technical depth than a typical greenfield concept.

That expertise matters because hydrometallurgical processing is not just a construction task. It requires operating knowledge, feed handling discipline, and product quality control. USAC said it will contribute knowledge and technical expertise to the venture. Therefore, the project has a stronger chance of moving from concept to workable industrial asset.

North American Antimony Supply Gains a Stronger Defense Link

North American antimony supply also gains a clear defense connection through this project. USAC said it can provide the joint venture access to its marketing network, including the US government. That creates a direct link between new processing capacity and strategic buyers. Consequently, the Idaho project could matter well beyond commercial metals trade.

That defense angle is already real. USAC secured a five-year fixed-price contract worth up to $245mn to supply antimony ingots to the US Defense Logistics Agency. The new joint venture has also prepared paperwork to pursue government funding. Therefore, the US antimony processing plant fits directly into a larger effort to rebuild critical mineral capacity in North America.

The Metalnomist Commentary

This project matters because it connects mine feed, processing, and defense demand in one structure. Antimony supply security will not improve through mining alone. It needs real domestic processing, and Idaho now looks like one of the more serious new steps in that direction.

US Defense Stake in Trilogy Metals Signals Strategic Copper Push

Trilogy Metals

US defense stake in Trilogy Metals marks a new phase in American critical minerals policy. The US Department of Defense will acquire a 10pc equity position in Trilogy Metals through a $35.6mn investment, directly supporting the Upper Kobuk Minerals Projects in Alaska. This US defense stake in Trilogy Metals aligns with Washington’s broader effort to secure domestic supplies of copper, zinc, lead and cobalt for energy transition and defense applications. The funding targets early-stage exploration and development, giving the government a financial foothold in a key North American resource district.

US defense stake in Trilogy Metals reshapes project governance

The share deal will significantly reshape the ownership and governance structure around the Ambler district assets. Trilogy, South32 and their joint venture vehicle Ambler Metals have agreed that the DOD will purchase 16.4mn Trilogy shares, split evenly between new issuance and stock sold by South32. As a result, the US defense stake in Trilogy Metals will include a 10pc holding in the company plus a transferred 10-year call option over an additional 6.2mn shares. In parallel, the DOD gains the right to appoint an independent director to Trilogy’s board for three years, embedding strategic oversight at the governance level. This board presence reinforces how the US defense stake in Trilogy Metals goes beyond financing and moves into influence over long-term project direction.

Ambler Access road and permitting move to the forefront

The investment also targets the bottlenecks that have slowed development of the Ambler district. The partners and the US government plan to collaborate on permitting, financing and construction of the Ambler Access road, linking the remote Upper Kobuk Minerals Projects to the Dalton Highway. As a result, the package couples capital with political support for a key piece of Arctic infrastructure. The parties also intend to pursue expedited mine permitting, although environmental and community scrutiny in Alaska remains intense. If successful, the integrated approach could shave years off the path to first production and turn the Ambler district into a meaningful copper and zinc supplier for North American smelters.

The Metalnomist Commentary

This transaction shows how security concerns are pulling US government capital directly into junior mining equity, not just downstream refining. For Trilogy and South32, the partnership de-risks infrastructure and permitting, but it will likely raise expectations on ESG performance and project transparency. The Ambler district could become a test case for whether state-backed critical minerals strategies can overcome the permitting gridlock that has stalled many US copper projects.

US Antimony DLA contract strengthens US strategic antimony supply

US Antimony

US Antimony DLA contract marks a major step in rebuilding North America’s antimony supply chain and defense resilience. The five-year, fixed-price US Antimony DLA contract is worth up to $245mn and targets nearly 6.7mn lbs of metal. As a result, the US Antimony DLA contract positions the company as the core domestic supplier for this critical mineral.

DLA moves to secure domestic antimony for the stockpile

The US Defense Logistics Agency awarded US Antimony a contract to supply ingots for the National Defense Stockpile. Deliveries will go to the Scotia Depot in New York, with first shipments expected this week under the multi-year framework. The tender directly cited US Antimony as the only source of qualifying domestic-grade material, underscoring its unique position.

US Antimony operates the only two antimony smelters in North America, in Montana and at Madero in Mexico. The Madero smelter reopened in April, restoring additional regional capacity for processed antimony products. Together, these assets give the company integrated upstream and midstream control from ore to ingot.

Antimony’s role in defense and critical minerals strategy

Antimony is a core ingredient in many strategic and military applications, especially for alloys and flame retardants. It is used in batteries, cables and specialized defense components, making secure supply a national priority. Therefore, the contract fits into Washington’s broader push to rebuild domestic and allied capacity for critical minerals.

The DLA has expanded its National Defense Stockpile purchases across several critical minerals this year. Recent tenders and RFIs have targeted cobalt, bismuth, high-purity aluminum, scandium flake, niobium and ferro-niobium. This portfolio approach aims to reduce dependence on unstable or adversarial foreign sources.

Market implications for antimony and strategic metals

The US Antimony DLA contract sends a strong demand signal to antimony markets and potential investors. Long-term, fixed-price offtake can support capital spending, operational stability and potential future expansions. Meanwhile, the contract highlights the value of having permitted, operating smelter capacity in politically stable jurisdictions.

Global antimony supply remains concentrated, with China still dominating mine output and processing. As a result, Western buyers increasingly seek diversified supply chains, including North American and allied producers. US Antimony’s position as the only North American smelter operator makes it a central part of this shift.

The Metalnomist Commentary

This deal effectively transforms US Antimony from a niche smelter into a strategic asset for US defense planners. For the broader critical minerals sector, it signals that long-dated government offtake contracts may become a key financing tool for non-Chinese supply.

Rio Tinto Hydropower Investment of $1.2 Billion Secures Low-Carbon Aluminum Future

Rio tinto Aluminium

Rio Tinto hydropower investment reaches $1.2 billion for modernizing the Isle-Maligne hydroelectric power plant in Quebec, Canada. The massive Rio Tinto hydropower upgrade represents the mining giant's largest investment in hydroelectric assets since the 1950s, targeting sustainable aluminum production at its Saguenay–Lac-Saint-Jean operations through 2032.

Comprehensive Modernization Enhances Production Capacity

Rio Tinto hydropower modernization encompasses extensive infrastructure improvements across multiple facility components. The project will replace electrical and mechanical equipment throughout the Isle-Maligne plant while constructing facility extensions and new mechanical workshops. Additionally, engineers will improve water intake systems and hydraulic passages to optimize power generation efficiency.

Meanwhile, the upgrade includes critical spillway modifications enabling year-round operations during Canadian winter conditions. These enhancements ensure continuous power supply for aluminum smelting operations regardless of seasonal weather challenges. The comprehensive scope demonstrates Rio Tinto's commitment to long-term operational reliability in Quebec's challenging climate.

Strategic Investment Supports Integrated Aluminum Operations

However, the Isle-Maligne facility serves as a cornerstone for Rio Tinto's extensive Quebec aluminum infrastructure. The Saguenay–Lac-Saint-Jean operations include one alumina refinery, five wholly owned aluminum smelters, and six hydropower plants. These integrated facilities account for nearly half of Rio Tinto's global aluminum output, making reliable power generation essential.

Therefore, the modernization project directly impacts Rio Tinto's competitive position in North American aluminum markets. Sebastien Ross, Rio Tinto Aluminium's managing director for Atlantic operations, emphasized that the investment ensures long-term competitiveness for Canadian and American customers. The low-carbon aluminum production capability provides significant marketing advantages in environmentally conscious markets.

Decades-Long Commitment to Sustainable Metal Production

Furthermore, the $1.2 billion investment timeline extends through 2032, demonstrating Rio Tinto's long-term commitment to Quebec operations. The hydroelectric power source enables low-carbon aluminum production, aligning with global sustainability trends and regulatory requirements. This positioning strengthens Rio Tinto's market differentiation in premium aluminum segments.

As a result, the modernization project reinforces Quebec's role as a strategic aluminum production hub for North American markets. The combination of abundant hydroelectric resources, existing infrastructure, and skilled workforce creates competitive advantages that justify substantial capital investment in facility upgrades.

The Metalnomist Commentary

Rio Tinto's $1.2 billion hydropower investment exemplifies how integrated mining companies leverage renewable energy assets to maintain competitive advantages in commodity markets. The project's scale and timeline demonstrate the capital intensity required to modernize aging industrial infrastructure while positioning aluminum operations for decades of low-carbon production in increasingly sustainability-focused markets.

US Antimony Revenue Doubles as Critical Mineral Demand Surges

US Antimony

US Antimony Corporation achieved remarkable financial performance in the first quarter, with revenue more than doubling to $7 million compared to the same period last year. The mining and processing company's impressive growth reflects surging antimony prices and significant operational improvements across its North American facilities.

Strong Financial Performance Driven by Strategic Market Position

Antimony sales dominated the company's revenue stream, generating $5.9 million and accounting for approximately 84% of total quarterly revenue. This substantial increase transformed the company's financial outlook dramatically. Net income reached $546,524, a striking turnaround from the $322,768 loss recorded in the first quarter of 2023.

The company's success stems from its unique market position as the operator of North America's only two antimony smelters. This exclusive status provides US Antimony with significant competitive advantages in a market where antimony serves critical applications including flame retardants, military equipment, and lead-antimony alloys for batteries and cables.

Expansion Plans Signal Continued Growth Trajectory

US Antimony expects second quarter revenue to climb further following the April restart of its Madero smelter in Mexico. Meanwhile, the company announced ambitious expansion plans for its Montana facility, targeting a six-fold capacity increase to 300 tons per month. These operational enhancements position the company to capitalize on growing demand for this critical mineral.

Therefore, the company's strategic acquisitions continue to strengthen its supply chain. US Antimony plans to begin sourcing antimony ore from Alaska in the second quarter, following its $5.25 million acquisition of additional antimony mining claims in Alaska during January. This vertical integration strategy reduces supply chain risks while expanding production capabilities.

However, the company's smaller zeolite division remains a minor revenue contributor compared to its core antimony operations. As a result, US Antimony's growth strategy focuses primarily on expanding antimony production capacity and securing additional ore sources.

The Metalnomist Commentary

US Antimony's exceptional Q1 performance underscores the critical importance of domestic mineral processing capabilities amid global supply chain uncertainties. The company's monopolistic position in North American antimony smelting, combined with strategic capacity expansions, positions it to capitalize on sustained demand for this essential defense and industrial mineral.

US Antimony Montana mining advances with new claims and smelter expansion

US Antimony Montana Mining

US Antimony Montana mining accelerates as the company reacquires claims near its Montana smelter. It will start mining immediately on five acres. It will seek federal and state permits to expand exploration. The move aligns mining with adjacent midstream capacity.

Permits, smelters, and production scale

The company operates North America’s only two antimony smelters. It restarted the Madero smelter in April. It plans to expand the Montana smelter six-fold to 300 t per month. These steps strengthen feed-to-smelter integration.

Supply security and market backdrop

US Antimony aims to secure domestic stibnite ore and reduce import risk. China recently blocked a stibnite shipment from Australia. Therefore, the firm is reshoring supply to support its Mexican and US smelters. This strategy improves control across midstream and downstream steps.

Meanwhile, new Montana claims complement operations in Alaska acquired in February. The portfolio now spans mining, smelting, and processing. US Antimony Montana mining thus underpins a broader North American network. That network targets defense, flame retardants, and lead-acid batteries.

The Metalnomist Commentary

If the Montana expansion delivers, domestic supply security will improve across North America. Watch permit timing, mine productivity, and smelter bottlenecks as capacity scales.

Gunnison Copper first cathode production boosts US copper supply ambitions

Gunnison Copper

Gunnison Copper first cathode production marks a key milestone for US domestic copper supply. The company produced its first copper cathode at the Johnson Camp Mine in Arizona in late August, ahead of schedule. As a result, the Gunnison Copper first cathode production strengthens US efforts to secure critical minerals for energy transition.

Early ramp-up at Johnson Camp Mine underpins new US copper source

Gunnison Copper first cathode production follows the successful start of solvent extraction and electrowinning operations. The company began running its SX plant and EW circuit in August, using run-of-mine ore from the Arizona site. Therefore, the project now moves from development into early ramp-up, which often proves pivotal for leaching projects.

The company expects to produce 25mn lbs per year of copper cathode, equal to about 11,300 tonnes. This scale does not rival major Chilean or Peruvian mines, yet it still matters for US niche supply. Meanwhile, the focus on finished cathode production rather than concentrates aligns with growing demand from North American smelters and fabricators.

Funding support highlights the broader strategic value of this new copper stream. The Johnson Camp Mine received backing from Nuton, a Rio Tinto venture focused on innovative copper technologies. In addition, the project secured $13.9mn in US Department of Energy tax credits in January to support domestic copper production.

Strategic context for US energy transition and critical minerals policy

The Gunnison Copper first cathode production arrives as policymakers push for more resilient US copper supply chains. Copper demand continues to rise across electric vehicles, renewable power and grid upgrades. Therefore, new SX–EW operations like Johnson Camp help reduce dependence on imported copper units.

Federal tax credits signal Washington’s willingness to support qualifying critical mineral projects. As a result, projects such as Johnson Camp can de-risk early capital phases and accelerate commissioning schedules. However, Gunnison Copper must still deliver consistent production performance, maintain environmental compliance and manage operating costs in Arizona’s competitive mining landscape.

For investors and copper buyers, the project offers modest but meaningful additional US cathode volumes. It may also showcase Nuton and Rio Tinto’s broader technology and partnership model for brownfield and mid-scale assets. Over time, similar projects could play a larger role in regional copper balance and contract pricing dynamics.

The Metalnomist Commentary

Gunnison Copper’s first cathode production at Johnson Camp illustrates how smaller US projects can still punch above their weight in policy terms. While volumes remain limited, the combination of Nuton funding and DOE tax support shows how technology and incentives now shape copper growth. Market participants should watch ramp-up performance closely, since SX–EW reliability will determine whether this asset becomes a durable pillar of US cathode supply.

Global Aluminium Output Rises in January as China Breaks Production Record

China Aluminium

Chinese Smelters Drive Global Gains with New Highs in Yunnan and Inner Mongolia

Regional Output Trends Show Growth in Europe, Africa, and South America

Global aluminium production surged in January, hitting 6.25 million tonnes, as China’s output reached a historic peak, according to the International Aluminium Institute. The worldwide increase marked a 2.73% year-on-year rise, matching December’s revised all-time record.

China Leads Global Growth with New Monthly High

China, the world’s largest aluminium producer, delivered 3.74 million tonnes in January, up 3.74% from a year earlier. This new monthly record stems from unrestricted operations in Yunnan province and expanded capacity in Inner Mongolia. Robust domestic demand and strong industry profitability have prompted Chinese producers to maximize output since late 2023.

Regional Output: Europe, Africa, and South America Expand

European aluminium output, including Russia, increased by 3.29% to 597,000 tonnes. Africa posted the strongest regional gain, climbing 7.87% to 137,000 tonnes. South American production also grew by 3.15% to 131,000 tonnes, while North American output slipped by a marginal 2,000 tonnes to 337,000 tonnes.

Asia (excluding China) saw a slight annual gain, reaching 411,000 tonnes. The Middle East maintained steady production at 541,000 tonnes, and Oceania’s output declined 1.88% to 157,000 tonnes.

China’s leadership in the aluminium sector continues to set the pace for global supply. As new capacity comes online and profitability remains high, Chinese production will likely remain a decisive factor in world market trends throughout 2024.

Mitsubishi acquires 30pc of Hudbay’s Copper World project

Hudbay Minerals

Mitsubishi acquires 30pc of Hudbay’s Copper World project to secure long-term US copper. The deal injects $600mn and deepens strategic ties. As a result, Mitsubishi acquires 30pc of Hudbay’s Copper World project to strengthen supply amid energy-transition demand. Therefore, Mitsubishi acquires 30pc of Hudbay’s Copper World project with staged funding and near-term development visibility.

Deal terms and strategic fit

Mitsubishi will invest $600mn to join Hudbay in Arizona. The package includes $420mn for equity and $180mn within 18 months. The structure boosts liquidity ahead of construction decisions. Meanwhile, it aligns Mitsubishi with IRA-driven, North American copper growth. The partnership extends prior collaboration on Copper Mountain.

Project scale, permits, and market timing

Copper World holds final permits approved in January. Hudbay guides 85,000 t/yr of copper over 20 years. This output targets a tight refined market and grid investment needs. Additionally, US localization supports OEMs and cable producers seeking secure supply. The timing coincides with robust demand from EVs and transmission buildouts.

Supply-chain and financing implications

The venture diversifies US copper sources beyond Chile and Peru. It also advances offtake optionality for smelters and fabricators. With Mitsubishi capital committed, financing risk moderates. In turn, Hudbay can optimize capex, phasing, and procurement. Downstream buyers gain traceability, permitting clarity, and logistics advantages inside Arizona.

The Metalnomist Commentary

This transaction signals a new phase of strategic copper partnerships. Expect more pre-production equity deals as OEMs and traders chase bankable tonnage. Execution now hinges on cost control and timely ramp-up to capture price upside.

ASCU Arizona copper project resource expansion lifts Cactus copper potential

Arizona Sonoran Copper

ASCU Arizona copper project resource expansion significantly increases the scale of the Cactus brownfield operation in Arizona. The ASCU Arizona copper project resource expansion lifts measured and indicated resources to 11bn lbs of contained copper. As a result, the ASCU Arizona copper project resource expansion strengthens the project’s position in the North American copper pipeline.

ASCU Arizona copper project resource expansion focuses on leachable copper

The updated resource shows a 51pc increase in measured and indicated copper. The estimate now totals 5mn tonnes of contained copper metal. Importantly, 75pc of this resource is leachable material, with 25pc as primary sulfides.

This split matters for project economics and development sequencing. Heap leach and solvent extraction electrowinning flowsheets can treat leachable material at lower capital intensity. Therefore, ASCU can potentially prioritise lower-cost phases early in the mine life. Primary sulfide material still offers long-term upside, but will likely require different processing routes.

The brownfield nature of Cactus also supports capital efficiency. Existing site infrastructure and historical data can reduce development risk. However, permitting, water management and community engagement will still require careful execution in Arizona.

Strategic implications of ASCU Arizona copper project resource expansion

The ASCU Arizona copper project resource expansion has already attracted strategic interest. In January, Hudbay acquired a 10pc stake in ASCU for C$19.9mn. The investment provides funds to advance technical studies and project definition at Cactus.

Hudbay’s involvement also adds operating experience and balance sheet support. The company brings a track record in copper mine development and processing. Therefore, ASCU gains both capital and potential technical backing as it de-risks Cactus.

The enlarged resource base improves optionality for mine planning. ASCU can test different pit designs, leach schedules and expansion paths. Meanwhile, the resource upgrade comes as global copper markets focus on future supply gaps. Brownfield projects like Cactus may find stronger interest from smelters, traders and offtakers.

The Metalnomist Commentary

Cactus is a useful example of how brownfield assets can grow into regionally significant copper projects with focused drilling. The combination of a larger leachable resource and a strategic investor puts ASCU in a stronger negotiating position. Market participants should watch upcoming technical studies for clues on capital intensity, leach performance and potential timelines to first production.

Global Aluminium Output Slightly Rises in August Amid Production Slowdown in China

Global Aluminium

Global aluminium output in August saw a modest rise compared to the same period last year but dipped from the record production levels reached in July, as growth in China, the world’s largest producer, stalled. According to data from the International Aluminium Institute, global production reached 6.18 million tonnes, marking a 1.2% year-on-year increase. Daily production rates averaged 199,300 tonnes, slightly lower than July’s revised figure of 199,500 tonnes.

China's Aluminium Output Stalls

China produced 3.69 million tonnes of aluminium in August, reflecting a 1.32% rise compared to the same month last year, but remained unchanged from July. Earlier in the summer, China had ramped up production due to new projects coming online in Inner Mongolia during the second quarter. Strong aluminium prices in China further incentivized existing smelters to maximize output for better profitability. However, growth plateaued in August as existing capacity reached its limits.

In other regions, aluminium production largely mirrored this trend, with slight year-on-year increases but flat growth compared to the previous month. North America produced 334,000 tonnes, a 0.3% increase from last year but down slightly from July. Western Europe saw a 5.65% year-on-year rise to 243,000 tonnes, while Asia, excluding China, produced 408,000 tonnes, showing a 3.03% rise. South American production rose by 4% to 130,000 tonnes.

The Middle East edged up 0.57% to 530,000 tonnes, while Russia and Eastern Europe increased production by 4.73% to 354,000 tonnes. In contrast, Australasia saw a decline of 3.75% to 154,000 tonnes, and African output remained steady at 135,000 tonnes.