Tronox and JX Advanced Metals Sign Rare Earth Cooperation and Investment Agreement

American Rare Earths has unveiled an updated Scoping Study for the Cowboy State Mine outlining a larger development concept for Halleck Creek, CEO Mark Wall said. The study evaluates a 4.5-million-tonne-per-year operation with a projected mine life of 26 years, generating an estimated after-tax net present value of approximately US$1.07 billion at an 8% real discount rate. Initial capital is estimated at approximately US$900 million, comprising roughly US$690 million in direct capital and US$210 million in contingency, with the updated study applying a 30% contingency allowance to direct capital versus 20% in the company's 2025 study. Modelled average annual production of neodymium-praseodymium oxide has increased from approximately 1,800 tonnes to 2,500 tonnes, and a separate closure cost provision of approximately US$56 million has been included at the end of the projected mine life. The development concept combines mining, comminution and mineral concentration at the Cowboy State Mine with a separate hydrometallurgical refinery planned for the Wheatland or Laramie area of Wyoming, as the company aims to establish a domestic supply of rare earth oxides and advance technical work to connect those materials with downstream U.S. production of rare earth metals and permanent magnets.