Project Update at Rudyard Project

Helix Exploration PLC, the helium exploration and development company with near-term production assets within the 'Montana Helium Fairway', is pleased to announce breakthrough scientific results from its flagship Rudyard Project.

An independent study by Dr. Michael Hofmann of AIM GeoAnalytics has confirmed that rock cuttings from the Rudyard wells contain the same minerals that naturally generate hydrogen deep within the Earth-including serpentine, olivine, and magnetite. These minerals occur in mafic and ultramafic rocks, which release hydrogen when they react with water under heat and pressure, underscoring significant potential for geological hydrogen generation at the Rudyard Project.

Complementing these findings, prior isotope analysis by Durham University revealed a ³He/⁴He ratio of 0.74 Rₐ, showing a measurable mantle helium component-which demonstrates the chemical fingerprint of deep-Earth fluids rising into the Rudyard system.

Highlights

• Elevated Helium-isotope Signature: Analysis from the Rudyard Project recorded a consistent ³He/⁴He ratio of 0.74 Rₐ, over 3,600% above average continental-crust values (0.02 Rₐ) representing some of the highest recorded in continental North America outside of Yellowstone with Helium-3 concentration averaging greater than 10 ppb.
• Confirmed Mantle Contribution and Geological Implications: Isotopic modelling suggests roughly 9% of Rudyard's helium originates from the mantle. This deep-Earth connection not only replenishes helium within the reservoir but also facilitates the water-rock reactions that generate natural hydrogen at depth - a key indicator of Rudyard's long-term potential as both a helium and hydrogen source.
• Hydrogen Potential: Geochemical results establish Rudyard as one of the few verified hydrogen-prone ultramafic systems in North America and has the potential to produce some of the world's cleanest hydrogen with zero CO₂ emissions.

Background

Nearly all hydrogen used today is made from Steam Methane Reforming (SMR) of natural gas, a process that releases large volumes of CO₂ and produces what is known as "grey hydrogen". By contrast, geological hydrogen is created naturally underground, requiring no fossil-fuel feedstock and emitting zero carbon when produced.

If confirmed at commercial scale, the hydrogen at Rudyard has the potential to represent one of the cleanest and most cost-effective hydrogen resource known on Earth-potentially meeting and exceeding the U.S. Department of Energy's "Hydrogen Shot" goal, which aims to reduce the cost of producing clean hydrogen to $1 per 1 kilogram within one decade (the 1:1:1 goal).

Caution regarding forward looking statements