Why did Ioneer (ASX:INR) sign the new letters of intent?

Ioneer (ASX:INR) signed the agreements to partner with South Korean entities to advance the path toward a final investment decision for its mineral asset.

What is the total financial investment made by Ioneer (ASX:INR) so far?

Ioneer (ASX:INR) has cumulative capital deployment of more than $220 million into its development project since 2016. This capital has funded more than 70% of the advanced engineering work required for the asset.

How many jobs is the Ioneer (ASX:INR) project expected to create?

The company stated that the project overseen by Ioneer (ASX:INR) is expected to support 275–300 permanent on-site positions during operations. These employment figures apply to the operational phase once the site is fully processing ore on-site.

What are the key development timelines for the Ioneer (ASX:INR) project?

Ioneer (ASX:INR) is targeting a Final Investment Decision in the second half of 2026, with first commercial production forecast for 2029. The business also aims to execute formal memorandums of understanding with its partners in July.

What geographic and market significance does the Ioneer (ASX:INR) asset hold?

The Rhyolite Ridge asset owned by Ioneer (ASX:INR) hosts the only known lithium-boron reserve in North America and is one of only two such deposits globally. The project serves as a key critical minerals supplier link between the United States and South Korea.

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Ioneer advances Rhyolite Ridge Project with $220M

Written by Heidi Cuthbert Published Jun 22, 2026, 11:41 PM

Ioneer entered into strategic non-binding letters of intent with KIND and Hyundai Engineering to advance the Rhyolite Ridge Lithium-Boron Project.
Following the announcement, the Ioneer share price remained unchanged at $0.14 on the ASX.
The agreements aim to advance the path to a final investment decision targeted for the second half of 2026.

Ioneer (ASX:INR) signed non-binding agreements with South Korean entities to advance its Rhyolite Ridge project after investing over $220 million.

The development follows an October 2025 update that halved processing times and increased projected annual lithium hydroxide production to 27,800 tonnes.

"Working with trusted Korean partners with a track record of on-time and on-budget delivery brings us closer to breaking ground and delivering urgently needed lithium and boron," said Ioneer Managing Director Bernard Rowe.

The company stated that the project is expected to support 275–300 permanent on-site positions during operations.

Following the announcement, the Ioneer share price was unchanged at $0.14.

The business aims to formalise cooperation through the execution of memorandums of understanding expected in July.

The company is targeting a final investment decision for the asset in the second half of 2026.

Ioneer advances Rhyolite Ridge Project with $220M

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