Ucore Readies for Louisiana 2026 Heavy Rare Earth Element Processing

Ucore Updates on Advancements and Accomplishments for:

• US Department of War HREE Demonstration & RapidSX™ Technology US Transition Project from Ucore's -

Kingston, Ontario, CAN, Commercialization and Demonstration Facility
- to -
Alexandria, Louisiana, USA, Strategic Metals Complex & HREE Refinery

Halifax, Nova Scotia--(Newsfile Corp. - December 11, 2025) - Ucore Rare Metals Inc. (TSXV: UCU) (OTCQX: UURAF) ("Ucore" or the "Company") is pleased to update on its RapidSX™ rare earth element ("REE") separation technology commercialization progress and its USD$22.4 million U.S. Department of War ("DoW") Other Transaction Agreement ("OTA" or the "Project") through the U.S. Army Contracting Command-Orlando ("ACC-ORL").

Since the December 2023 start of the demonstration program, Ucore has operated and continuously improved its 52-Stage RapidSX™ Demonstration Plant ("Demo Plant") within the Company's Kingston, Ontario, Commercialization and Demonstration Facility ("CDF"). This work is dedicated to transitioning the Company's RapidSX™ separation technology to its under-construction Louisiana Strategic Metals Complex ("SMC") in Alexandria, Louisiana. The Louisiana SMC is a developing REE separation and oxide production facility focused on the production of mid (SmEuGd) and heavy (initially Tb and Dy, potentially followed by Y, which is in high demand) rare earth elements with the ability to also produce an NdPr rare earth oxide ("REO") product.

The CDF work has focused on the precise manipulation of tonnes of a heavy mixed rare-earth oxide derived from a US-friendly feedstock resource through the series of RapidSX™ splits shown in Figure 1.

Figure 1 - CDF Heavy Rare Earth Processing Demonstration Trials - Road Map to the Louisiana SMC in 2026

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/1119/277748_9d138dff040b492b_001 ...

These splits represent the initial planned REO groups and products for the Louisiana SMC, and in every case have been directly compared to a 52-Stage Conventional Solvent Extractant ("CSX") pilot circuit at the CDF for direct purity and recovery comparisons.

Ucore's advancements and achievements on the Project that lead to Louisiana include:

• Completion of about 5,700 hours of REE processing with tonnes of heavy mixed rare earth oxides ("MREO") in an automated and simulated 24-hour per day commercial production environment