Element One hits 28.46% magnesium and 3,305 ppm nickel at Twin Sisters

Vancouver, British Columbia--(Newsfile Corp. - September 22, 2026) - Element One Hydrogen & Critical Minerals Corp. (CSE: EONE) ("Element One" or the "Company") is pleased to announce assay results from sampling of olivine material at Millbank Materials' Twin Sisters ultramafic project in Washington State. The eight samples returned consistently strong magnesium values ranging from 26.39% to 28.46% Mg, together with nickel values ranging from 2,660 to 3,305 ppm Ni.

The results provide initial validation of the quality and consistency of the domestic ultramafic feedstock that underpins Element One's Twin Sisters strategy. Under its memorandum of understanding with Millbank Materials, the Company has the right to purchase up to 50,000 tonnes per year of material represented by the sampling program, with an option to increase that amount to 100,000 tonnes per year.

Representative sample splits have been provided to Revora Materials Inc. ("Revora"), a New York-based mineral-processing technology company, for independent evaluation as part of the parties' ongoing work to assess the suitability of Twin Sisters material for processing using Revora's proprietary IonMet™ technology platform.

Investor Highlights

Consistent magnesium-rich feedstock: all eight samples returned between 26.39% and 28.46% Mg.

Meaningful nickel values: assays ranged from 2,660 to 3,305 ppm Ni, supporting further metallurgical evaluation of potential recoverable mineral products.

Domestic supply pathway: the Millbank MOU provides access to up to 50,000 tonnes per year, with an option to increase to 100,000 tonnes per year.

Next-stage testwork underway: sample splits have been delivered to Revora for independent characterization and process evaluation.

Potential dual-value platform: Element One is evaluating the same ultramafic rock for critical-mineral recovery and natural hydrogen generat