• Ioneer outlined its fully permitted Rhyolite Ridge lithium-boron project in Nevada, citing completion of the NEPA process and a Record of Decision from the U.S. Bureau of Land Management in October 2024.
• Project financing includes a US$996 million loan from the U.S. Department of Energy Office of Energy Dominance Financing that closed in January 2025.
• Key operating metrics highlighted a 77-year mine life, an ore reserve of 266 million metric tons, average annual production of 27,800 metric tons of lithium hydroxide monohydrate in years 1-25.
• Cost guidance for years 1-25 showed C1 cash cost of US$2,933 per metric ton of LCE, all-in sustaining cost of US$4,628 per metric ton of LCE, supported by boric acid co-product credits.
• Economic estimates included initial capex of US$1.68 billion, post-tax unlevered NPV at an 8% discount rate of US$2.24 billion, post-tax unlevered IRR of 18%.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Ioneer Ltd. published the original content used to generate this news brief on May 20, 2026, and is solely responsible for the information contained therein.