U.S. District Court Upholds Federal Permit for Rhyolite Ridge Lithium-Boron Project

U.S. District Court Upholds Federal Permit for Rhyolite Ridge Lithium-Boron Project

Ioneer Ltd ("Ioneer") (ASX: INR,OTC:GSCCF, NASDAQ: IONR) is pleased to announce that The U.S. District Court for the District of Nevada today issued its decision in Center for Biological Diversity v. Stone-Manning , upholding the approval of the Rhyolite Ridge mine plan.

The Rhyolite Ridge Lithium-Boron Project (Project) will mine and process two critical minerals in Nevada. The Project will provide a significant new source of two materials necessary for permanent magnets, batteries, semiconductors, behind-the-meter energy and military applications — strengthening the U.S. supply chain, reducing reliance on foreign sources, and bolstering national security.

The Court found that the Bureau of Land Management (BLM) and U.S. Fish and Wildlife Service (USFWS) complied with the Endangered Species Act, Federal Land Policy and Management Act, and National Environmental Policy Act in their review and approval of the project.

Ioneer issued the following statement:

"Ioneer is pleased that the District Court denied all challenges to the Rhyolite Ridge mine plan. For more than six years, we have worked closely with state, federal and tribal representatives, as well as the Fish Lake Valley community, to responsibly develop our Rhyolite Ridge Lithium-Boron Project.

This favorable outcome is a significant milestone and allows us to continue advancing our work in delivering lithium and boron for the United States.

Rhyolite Ridge will create hundreds of new American jobs, reduce reliance on foreign materials and processing, and provide a domestic source of two critical minerals.

We look forward to completing our strategic partnering process and beginning construction."

Bernard Rowe, Ioneer Managing Director, added, "Today's outcome is a credit to all involved parties in the thorough assessment and approval process. We look forward to bringing our long-term, low-cost and stable supply of lithium and boron online."

This ASX release has been authorised by Ioneer Managing Director, Bernard Rowe.

About Ioneer

Ioneer Ltd. is an emerging lithium–boron producer and the 100% owner of the Rhyolite Ridge Lithium-Boron Project. Rhyolite Ridge is one of only a small number of lithium-boron ore deposits globally and a linchpin project in Nevada's burgeoning Lithium Loop.

Rhyolite Ridge closed a US$996 million loan with the U.S. Department of Energy's Energy Dominance Financing Program in January 2025. In October 2024, Ioneer received the final federal permit for the project from the Bureau of Land Management, concluding the formal federal permitting process which began in early 2020. Ioneer signed separate offtake agreements with Ford Motor Company and Prime Planet Energy & Solutions (joint venture between Toyota and Panasonic) in 2022 and Korea's EcoPro Innovation in 2021.

To learn more about Ioneer, visit www.Ioneer.com/investors or join our online communities on X , Facebook , LinkedIn , Instagram and YouTube .

Important Notice and Disclaimer

Forward-Looking Statement

This announcement contains certain forward-looking statements and comments about future events, including Ioneer's expectations about the Project and the performance of its businesses. Forward looking statements can generally be identified by the use of forward-looking words such as ‘expect', ‘anticipate', ‘likely', ‘intend', ‘should', ‘could', ‘may', ‘predict', ‘plan', ‘propose', ‘will', ‘believe', ‘forecast', ‘estimate', ‘target' and other similar expressions within the meaning of securities laws of applicable jurisdictions. Indications of, and guidance on, the Conditional Commitment, financing plans, future earnings or financial position or performance are also forward-looking statements.

Forward-looking statements involve inherent risks and uncertainties, both general and specific, and there is a risk that such predictions, forecasts, projections and other forward-looking statements will not be achieved. Forward-looking statements are provided as a general guide only and should not be relied on as an indication or guarantee of future performance. Forward looking statements involve known and unknown risks, uncertainty and other factors which can cause Ioneer's actual results to differ materially from the plans, objectives, expectations, estimates, and intentions expressed in such forward-looking statements and many of these factors are outside the control of Ioneer. Such risks include, among others, uncertainties related to the finalisation, execution, and funding of the DOE financing, including our ability to successfully negotiate definitive agreements and to satisfy any funding conditions, as well as other uncertainties and risk factors set out in filings made from time to time with the U.S. Securities and Exchange Commission and the Australian Securities Exchange. As such, undue reliance should not be placed on any forward-looking statement. Past performance is not necessarily a guide to future performance and no representation or warranty is made by any person as to the likelihood of achievement or reasonableness of any forward-looking statements, forecast financial information or other forecast. Nothing contained in this announcement, nor any information made available to you is, or shall be relied upon as, a promise, representation, warranty or guarantee as to the past, present or the future performance of Ioneer.

Except as required by law or the ASX Listing Rules, Ioneer assumes no obligation to provide any additional or updated information or to update any forward-looking statements, whether as a result of new information, future events or results, or otherwise.

Investor Relations
Chad Yeftich, Ioneer USA Corporation
Investor Relations
T: +1 775 993 8563
E: ir@ioneer.com

Media Relations
Daniel Francis, FGS Global
E: daniel.francis@fgsglobal.com

News Provided by Business Wire via QuoteMedia

INR:AU
The Conversation (0)
Ioneer Ltd.

Ioneer Ltd.

Developing a Rare North American Lithium-Boron Deposit Crucial to Clean Technology

Developing a Rare North American Lithium-Boron Deposit Crucial to Clean Technology Keep Reading...
Fastmarkets Global Lithium, Battery & Critical Materials returns to Las Vegas as the key meeting point for deals, capital and supply chain strategy

Fastmarkets Global Lithium, Battery & Critical Materials returns to Las Vegas as the key meeting point for deals, capital and supply chain strategy

Las Vegas, June 22 to 25, 2026

Investing News Network has secured its audience an exclusive opportunity to access one of the most commercially important gatherings in the battery materials market, with 20% off using code INN20.Each year, the executives shaping global lithium and battery supply chains come together in Las... Keep Reading...
Lithium Argentina to Release First Quarter 2026 Results on May 12, 2026

Lithium Argentina to Release First Quarter 2026 Results on May 12, 2026

Lithium Argentina AG ("Lithium Argentina" or the "Company") (TSX: LAR) (NYSE: LAR) will release its first quarter 2026 earnings results before market open on Tuesday, May 12, 2026. The Company will hold a webcast and conference call to discuss its first quarter 2026 results on Tuesday, May 12,... Keep Reading...
Lithium Africa to Commence 2,000 m Drill Program at Adzopé and Provides Côte d'Ivoire Exploration Update

Lithium Africa to Commence 2,000 m Drill Program at Adzopé and Provides Côte d'Ivoire Exploration Update

Lithium Africa Corp. (TSXV: LAF) (FSE: 6MQ) ("Lithium Africa" or the "Company") is pleased to provide an exploration update on its Côte d'Ivoire assets, highlighted by the commencement of its first drill program at Adzopé since going public and continued advancement of priority targets at... Keep Reading...
E-Power Resources Inc. Announces Closing of an Oversubscribed Private Placement

E-Power Resources Inc. Announces Closing of an Oversubscribed Private Placement

E-Power Resources Inc (CSE: EPR) (FSE: 8RO) ("E-Power" or the "Company") announces that it has closed the private placement (the "Private Placement") previously announced on March 23, 2026 (the "Private Placement"). The Private Placement was oversubscribed.An aggregate of 10,355,030 units (the "... Keep Reading...
SAGA Metals Reports Assays from R-0024 to R-0026 with Intercepts Including 54.20% Fe2O3, 7.07% TiO2, 0.443% V2O5 from 2026 Drilling at Trapper South, Radar Critical Minerals Project in Labrador

SAGA Metals Reports Assays from R-0024 to R-0026 with Intercepts Including 54.20% Fe2O3, 7.07% TiO2, 0.443% V2O5 from 2026 Drilling at Trapper South, Radar Critical Minerals Project in Labrador

Saga Metals Corp. (TSXV: SAGA,OTC:SAGMF) (OTCQB: SAGMF) (FSE: 20H) ("SAGA" or the "Company"), a North American exploration company focused on critical mineral discoveries, is pleased to report additional assay results from drill holes R-0024, -0025 and -0026 completed in 2026 as part of its... Keep Reading...
Argentina Lithium Signs US$100 Million Heads of Terms and Framework Agreement with Lanshen for Rincon West

Argentina Lithium Signs US$100 Million Heads of Terms and Framework Agreement with Lanshen for Rincon West

Argentina Lithium & Energy Corp. (TSXV: LIT,OTC:LILIF) (FSE: OAY3) (OTCQB: LILIF), ("Argentina Lithium" or the "Company") is pleased to announce that it has entered into a non-binding Heads of Terms and Framework Agreement (the "Framework Agreement") with Xi'an Lanshen New Material Technology... Keep Reading...

Interactive Chart

Latest Press Releases

Related News