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American Rare Earths Limited
Investor Insight
American Rare Earths is unlocking the USA’s rare earths potential through its strategic, high-value asset in Wyoming, ramping up its development to bolster the North American critical minerals supply chain.
Overview
American Rare Earths (ASX:ARR,OTCQX:ARRNF,ADR:AMRRY) is a critical minerals exploration company focused on its 100 percent owned Halleck Creek project in Wyoming. This project represents the largest known rare earth deposit in the US, with high concentrations of key magnet elements such as neodymium, praseodymium, dysprosium and terbium—essential components for renewable energy, electric vehicles and advanced defense systems.
The US currently depends on China for 80 to 90 percent of its rare earth processing, which poses a significant supply chain risk. Halleck Creek’s vast resource, with a 2.63-billion-ton JORC estimate at 3,292 parts per million (ppm) total rare earth oxide (TREO), provides an opportunity to secure domestic supply for nearly 100 years.
Beyond its substantial resource base, the project offers significant exploration upside, presenting a multi-generational opportunity to establish a sustainable rare earths supply chain in the US. The support from EXIM Bank further highlights the strategic importance of Halleck Creek in reducing U.S. dependency on foreign suppliers.Company Highlights
- American Rare Earth’s flagship project, Halleck Creek, is one of North America’s largest REE deposits. With a 2.63-billion-ton JORC resource at 3,292 ppm TREO, it holds the potential to meet US rare earths demand for approximately 100 years.
- The company is completely focused on developing a US-based critical minerals supply chain, aligning with US policies to reduce reliance on China for rare earth supply.
- The Halleck Creek project’s planned development consists of two phases. Phase 1 entails development of the Cowboy State mine, which is located entirely on Wyoming state land, enabling faster permitting and streamlined regulatory processes. Subsequently, cash flow generated from CSM will support development of the federal portions of Halleck Creek in Phase 2.
- This phased approach allows ARR to accelerate its pathway to production, enhance shareholder value, and strengthen its position as a key domestic supplier of rare earth elements in the United States.
- Well-positioned to address critical supply chain vulnerabilities, Halleck Creek benefits from strong federal and state support, including a non-binding EXIM Bank letter of interest for funding up to $456 million.
Key Projects
Halleck Creek Project (Wyoming)
The Halleck Creek project in Albany County, Wyoming, is the cornerstone of ARR’s growth strategy. Recognized as one of the largest, rare-earth deposits in North America, it boasts a JORC-compliant resource of 2.63 billion tons at 3,292 ppm TREO. The deposit is hosted in Precambrian granites and metamorphic rocks, which contain REE-enriched minerals like monazite and bastnaesite. The coarse-grained nature of the mineralization ensures cost-effective extraction and processing.
The high TREO content and low levels of impurities make Halleck Creek well-suited for producing separated rare earth oxides, particularly key magnet elements such as neodymium, praseodymium, terbium and dysprosium. The project’s proximity to established infrastructure, including roads and utilities, supports cost-efficient development. Detailed geological surveys have delineated a large, continuous mineralized zone, which currently covers only 16 percent of the total land package. Advanced metallurgical testing has confirmed recovery rates of up to 67 percent, with further optimization efforts ongoing. Drilling campaigns in 2024 successfully expanded resource estimates, validating the deposit’s scalability.
ARR plans to take a phased development approach for Halleck Creek, designed to maximize early value while minimizing risk. Phase 1 entails the development of the Cowboy State mine (CSM), which will focus on mining high-grade zones and generating early cash flow. Phase 1 will be developed entirely on Wyoming state land, enabling faster permitting and streamlined regulatory processes.
According to the Phase 1 Scoping Study, the CSM development is projected to require an initial capex of $380 million, with a 20 percent contingency. The study estimates an NPV of $430 million at a 10 percent discount rate and an IRR of 21.1 percent, based on a 3-million-ton-per-annum throughput rate. The project is expected to have a payback period of 2.9 years and a life of mine exceeding 20 years, with significant potential for future expansion.
In Phase 2, ARR plans to expand operations into federal land areas within the Halleck Creek property. This phase involves de-risking the federal portions of the project by leveraging cash flow from the initial phase and advancing permitting processes in parallel. Additionally, ARR is actively engaging with state regulators and local stakeholders to ensure compliance and support for its phased development approach.
Upcoming Work
ARR is advancing its development efforts on Halleck Creek over several fronts. The company plans to conduct additional drilling aimed at expanding the resource by targeting unexplored zones with known mineralization. In parallel, Phase 2 metallurgical testing will focus on improving recovery rates and producing high purity separated rare earth oxides to enhance project economics. To maintain its accelerated timeline, ARR is making progress on permitting, including advancing state-level approvals and environmental baseline studies for the CSM area. Furthermore, the company plans to initiate a pre-feasibility study (PFS) by late 2025, emphasizing a phased development strategy that includes the CSM as a key component.
La Paz Project (Arizona)
The La Paz project, located in western Arizona, is a promising asset in ARR’s portfolio, featuring a 171-million-ton JORC resource. The deposit is enriched in light rare earth elements, particularly cerium, lanthanum and neodymium, which are critical for renewable energy technologies and electric vehicles. The project benefits from excellent infrastructure, including proximity to roads and power. ARR continues to evaluate the potential for expanding the resource and advancing the project through further drilling and metallurgical testing. Although secondary to Halleck Creek, it holds potential as a long-term asset for ARR’s portfolio.
Beaver Creek (Wyoming)
This project is located near Halleck Creek and shares similar geological characteristics, indicating potential for significant rare earth mineralization. Preliminary fieldwork has identified areas with elevated rare earth element concentrations, and ARR plans to conduct detailed mapping and geophysical surveys to define drill targets.
Searchlight (Nevada)
Situated close to Mountain Pass, the only currently operating rare earth mine in the US, the Searchlight project is strategically located in a region known for its rare earth potential. ARR’s exploration strategy includes leveraging historical data and conducting modern geochemical sampling to identify high-priority areas for further exploration.
Leadership Team
Chris Gibbs - CEO & Executive Director
Appointed in November 2021, Chris Gibbs brings more than 30 years of experience in the resource sector across Australia, Canada, the US, South America, Africa and Europe. His track record includes driving growth and operational excellence for industry-leading mining companies. Prior to joining ARR, Gibbs held senior positions at Argonaut Gold, Centerra Gold, Barrick Gold, Placer Dome and Millennium Chemicals.
Joe Evers - President
Joe Evers has served in various leadership roles in the energy and mining industry. Most recently, Evers served as general counsel of American Rare Earths. Prior to that, he was corporate counsel at an international mining company and held positions of increasing responsibility in the land and policy departments at a publicly traded oil and gas company. Originally hailing from Sheridan, Wyoming, Evers received a bachelor’s degree and JD/MA in Environment & Natural Resources from the University of Wyoming. Evers was instrumental in securing a US$7.1 million grant from the State of Wyoming with support from partners Wyoming Energy Authority and the University of Wyoming Energy Resources Council.
Dwight Kinnes - Chief Technical Officer
A geologist with decades of experience, Dwight Kinnes has specialized in geological modeling of complex deposits in various international locations. Before joining ARR, he served as president of Highland GeoComputing LLC for 17 years, providing geological field services, modeling, GIS and database management to the mining industry.
Wayne Kernaghan - Company Secretary
Appointed on September 25, 2020. Wayne Kernaghan is a member of the Institute of Chartered Accountants in Australia with over 35 years’ experience in various areas of the mining industry. He is a fellow of the Australian Institute of Company Directors and a chartered secretary.
Board of Directors
Richard Hudson - Chairman
Richard Hudson contributes deep leadership expertise in mining and exploration, with a focus on mineral royalties, mineral economics, financial management, strategic planning and acquisitions. His extensive experience enhances the board's capacity to guide ARR's strategic initiatives.
Sten L Gustafson - Non-executive Director and Deputy Chairman
Sten Gustafson is the chief executive officer and a director of Pyrophyte Acquisition (NYSE:PHYT), a special purpose acquisition company focused on companies that provide products, services, equipment and technologies that support a variety of energy transition solutions. He is a highly experienced energy service industry executive, investment banker and corporate securities attorney. With over 25 years of experience in the global energy sector, Gustafson has advised on more than 100 corporate transactions worldwide worth over US$100 billion in value.
Melissa ‘Mel’ Sanderson - Non-executive Director
Melissa Sanderson’s international career has spanned diplomacy and mining for more than 30 years. She is adept at cross-cultural communication and brings exceptional leadership experience in inclusivity and diversity issues. At global mining leader Freeport-McMoRan, Sanderson sited, staffed and ran a corporate office focused on government and public relations and social responsibility programs. She has also served as a senior diplomat in the US Department of State.
Hugh Keller - Non-executive Director
Hugh Keller had a successful 34 year career as a partner at the law firm Dawson Waldron (now Ashurst) until retirement from full time legal practice in 2010. During this time, Keller served as joint national managing partner, Sydney office managing partner, chairman of the staff superannuation fund, one of the practice leaders, and as a board member. He was a non-executive director of ASX listed Thakral Holdings and a member of its audit committee until the company was acquired in a public takeover by Brookfield. He was a non-executive director of LJ Hooker and a member of its audit committee. He has also served as chairman of a large private investment company, several small investment companies and a private small exploration company. Keller has extensive legal experience and expertise in commercial contracts and arrangements, and public company audit committee procedures and requirements. He has led large teams of professionals and successfully managed people and resources in large projects.
Advancing one of the largest REE deposits in North America
Critical Metals Corp NASDAQ CRML – Surpasses 70% Completion Milestone of the Tanbreez Bankable Feasibility Study & Remains on Schedule for Completion on or Before Q4 2025
Critical Metals Corp. (Nasdaq: CRML) (“Critical Metals Corp” or the “Company”), a leading critical minerals mining company, today announced that Tanbreez Mining Greenland A/S (“Tanbreez”) is approximately 70% complete on the final stages of the Bankable Feasibility Study (BFS) for a 500,000 tons per annum mining and processing operation at the Tanbreez Rare Earth Project in South Greenland. The BFS is being led by Danish engineering firm NIRAS A/S (“NIRAS”), a globally leading multidisciplinary engineering and environmental consultancy based in Denmark. The BFS remains on track for submission in Q4 2025. In addition, NIRAS has completed environmental fieldwork for the 2025 baseline sampling program.
Tony Sage, Executive Chairman of the Company, commented:
“The progress on the final BFS engineering and the completion of the 868 baseline sampling program represent a major milestone in unlocking the full potential of the Tanbreez Rare Earth Project. Our partnership with NIRAS ensures that both technical and environmental aspects are being addressed to the highest standards, reinforcing our commitment to responsible development.”
This final BFS phase includes:
• Completion of mine design and process plant engineering
• Tailings management and water treatment strategies
• Integration of environmental and regulatory inputs
• Preparation of documentation for submission to Greenland’s MLSA
Figure 1. Proposed plant and port site.
The engineering scope encompasses detailed design of the two open pit mining phases, including blasting and haulage logistics, crushing and magnetic separation circuits, slurry transport systems, and tailings deposition infrastructure at Lake Foster. It also includes port and haul road layouts, diesel power generation, and worker accommodation facilities. NIRAS is integrating hydrological modelling, dust dispersion controls, and closure planning into the final design to ensure long-term environmental compliance, operational efficiency, and alignment with Greenland’s regulatory framework.
Figure 2 – NIRAS engineers at the proposed Tanbreez port site 27/8/2025
Once completed, which is expected in the fourth quarter of 2025, the BFS will form the central component of the Tanbreez updated Exploitation License documentation, to be submitted to the Mineral License and Safety Authority (MLSA) of Greenland, in accordance with the Greenlandic Mineral Resources Act and the specific terms of the granted exploitation license MIN 2020-54.
Figure 3 – NIRAS team undertaking August 2025 baseline marine sampling
This submission will support the progression of the project towards final approval to commence potential commercial mining operations.
Figure 4 - NIRAS FS finalization team
Completion of 2025 Baseline Sampling Program
In parallel, Critical Metals Corp confirms that environmental fieldwork for the 2025 baseline sampling program has officially been completed. This program—coordinated by NIRAS ran through August 2025 and was designed to close spatial and seasonal gaps in the existing baseline dataset.
Key components of the sampling campaign included:
- Bergerhoff dust monitoring
- All-year freshwater sampling across 19 stations
- Sediment coring in Lake Foster and Kangerluarsuk Fjord
- Arctic char population update via electrofishing
- Intertidal sampling of mussels, bladderwrack, and sea scorpion
Figure 5 – NIRAS team undertaking baseline marine fauna sampling August 2025
These efforts support the Environmental Impact Assessment (EIA) and reinforce Tanbreez’s commitment to responsible development.
About NIRAS
With nearly 70 years of experience, NIRAS has grown from a Danish consultancy into an international leader in sustainable progress. Founded by visionary engineers Jørgen Kristian Nielsen and Konrad Rauschenberger in 1956, NIRAS’s early projects in Greenland laid the foundation for their expertise in resilient and innovative solutions. Their decentralized structure fosters local expertise, adaptability and collaboration across borders and disciplines, ensuring sustainable value creation for their clients and the communities they serve.
As a multidisciplinary consultancy company with more than 3,000 employees located in 62 offices across Europe, Africa, Asia, North, and South America, NIRAS work within multiple areas from processing plants and construction over energy, water, environment, and infrastructure to third world aid and urban planning. NIRAS have 8,000 ongoing projects in more than 140 countries and their trademark is the crosscutting approach, always grounded and tailored to achieve the best outcomes for their clients and communities.
About Tanbreez
The Tanbreez Rare Earth Project is one of the world’s largest hard rock rare earth elements (REE) deposits, located in southern Greenland near the town of Qaqortoq. The project is notable for its high concentration of heavy rare earth oxides (HREOs), which are critical for high-tech applications, clean energy, and defence industries. Unlike other major TREO deposits, Tanbreez contains very low levels of uranium and thorium, making it more environmentally and politically viable.
- Deposit Type: Kakortokite (a stratiform layered igneous rock rich in TREOs)
- Kakortokite Estimate: ~4.7 billion tonnes of REE-bearing mineralisation
- Heavy REE Content: ~27% of Total Rare Earth Oxides (TREO)
- Location: Near Qaqortoq, southern Greenland
- Target drilling: ongoing to achieve Measured and Indicated Mineral Resources
- Project Stage: advanced Bankable Feasibility Study phase
Kakortokite host may not always contain any economic mineralisation of TREO.
About Critical Metals Corp.
Critical Metals Corp (Nasdaq: CRML) is a leading mining development company focused on critical metals and minerals, and producing strategic products essential to electrification and next generation technologies for Europe and its western world partners. Its flagship Project, Tanbreez, is one of the world's largest rare earth deposits and is located in Southern Greenland. The deposit is expected to have access to key transportation outlets as the area features year-round direct shipping access via deep water fjords that lead directly to the North Atlantic Ocean.
Another key asset is the Wolfsberg Lithium Project located in Carinthia, 270 km south of Vienna, Austria. The Wolfsberg Lithium Project is the first fully permitted mine in Europe and is strategically located with access to established road and rail infrastructure and is expected to be the next major producer of key lithium products to support the European market. Wolfsberg is well positioned with offtake and downstream partners to become a unique and valuable asset in an expanding geostrategic critical metals portfolio.
With this strategic asset portfolio, Critical Metals Corp is positioned to become a reliable and sustainable supplier of critical minerals essential for defense applications, the clean energy transition, and next-generation technologies in the western world.
For more information, please visit https://www.criticalmetalscorp.com/.
Cautionary Note Regarding Forward Looking Statements
This news release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements may include expectations of our business and the plans and objectives of management for future operations. These statements constitute projections, forecasts and forward-looking statements, and are not guarantees of performance. Such statements can be identified by the fact that they do not relate strictly to historical or current facts. When used in this news release, forward-looking statements may be identified by the use of words such as “estimate,” “plan,” “project,” “forecast,” “intend,” “will,” “expect,” “anticipate,” “believe,” “seek,” “target,” “designed to” or other similar expressions that predict or indicate future events or trends or that are not statements of historical facts. In addition, any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking statements.
Forward-looking statements are subject to known and unknown risks and uncertainties and are based on potentially inaccurate assumptions that could cause actual results to differ materially from those expected or implied by the forward-looking statements. Actual results could differ materially from those anticipated in forward-looking statements for many reasons, including the factors discussed under the “Risk Factors” section in the Company’s Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission. These forward-looking statements are based on information available as of the date of this news release, and expectations, forecasts and assumptions as of that date, involve a number of judgments, risks and uncertainties. Accordingly, forward-looking statements should not be relied upon as representing our views as of any subsequent date, and we do not undertake any obligation to update forward-looking statements to reflect events or circumstances after the date they were made, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.
Critical Metals Corp.
Investor Relations: ir@criticalmetalscorp.com
Media: pr@criticalmetalscorp.com
Photos accompanying this announcement are available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/88d85eb6-7ec7-4eb8-a7f1-9541d0ea1e07
https://www.globenewswire.com/NewsRoom/AttachmentNg/78882267-a354-4f9d-bfc5-904be7463263
https://www.globenewswire.com/NewsRoom/AttachmentNg/2ee43546-681a-4bee-ab33-8753fe41123b
https://www.globenewswire.com/NewsRoom/AttachmentNg/4b7e57a1-6ec0-45eb-b5c2-1fe2fc557de3
https://www.globenewswire.com/NewsRoom/AttachmentNg/e76ca157-f762-463b-a9ef-4b68773af474
American Rare Earths Limited Investor Kit
- Corporate info
- Insights
- Growth strategies
- Upcoming projects