Nasdaq-listed Critical Metals has signed a letter of intent (LoI) for a ten-year offtake agreement with US-based full-cycle rare earth processor REalloys, securing sales for 15% of production from its Tanbreez rare earth project in southern Greenland.

The agreement follows an August deal to supply 10% of production to Ucore Rare Metals, taking total committed offtake to 25% of Tanbreez’s expected output.

REalloys, which is preparing to list on Nasdaq, operates an integrated magnet manufacturing facility in Ohio and owns the Hoidas Lake rare earth project in Saskatchewan. The company supplies magnet materials for what it calls “US Protected Markets”, including the defence industrial base, nuclear and critical infrastructure sectors and allied nations.

“The Tanbreez project presents a remarkable opportunity for REalloys, given its rich, long-life deposits of heavy rare earth elements – vital to the defence industrial base of the United States and our allied nations,” said REalloys CEO Lipi Mainheim. “REalloys and Critical Metals Corp share a common commitment to reducing China’s dominance in the global rare earth supply chain.”

Critical Metals CEO Tony Sage said the agreement strengthened the company’s push into the US market. “Tanbreez stands as one of the most strategically important rare earth assets globally, thanks to its scale and composition. This offtake agreement marks another key step into the US market and sets the stage for expanded supply across American processing networks.”

The companies are working to finalise definitive documentation, with execution subject to due diligence, final commercial terms, and regulatory approvals.

The Tanbreez project is among the world’s largest heavy and medium rare earth deposits and benefits from year-round deep-water access to the North Atlantic. Critical Metals also owns the Wolfsberg lithium project in Austria, which it describes as the first fully permitted lithium mine in Europe.

Sage said the company’s growing offtake portfolio aligned with Western governments’ efforts to build secure and independent supply chains for energy transition and defence applications.