Project Nemaha - Maiden Prospective Hydrogen + Helium Resource Assessment

HyTerra Ltd (ASX: HYT) (HyTerra or the Company) is pleased to advise that Sproule Incorporated ("Sproule") has completed an independent prospective source assessment of the Company's 100% owned and operated Nemaha Ridge leases in Kansas. Sproule's Independent Resource Report was completed after its extensive review of geophysical, geological and wells data in the area.

Benjamin Mee, Hyterra's Executive Director, commented: "This independent assessment of both prospective hydrogen and helium resources strengthens our confidence in our portfolio as a platform to potentially support the decarbonising of several mature industrial sectors and transport in the mid-West USA, and elsewhere. We will use this resource assessment to rank our drilling targets."

Highlights:

• Hyterra delivers maiden independent Prospective Resource estimate of hydrogen and helium within 100% held Project Nemaha leases in Kansas, USA
• P50 New Hydrogen Prospective Resource is 100.2 BCF (237,543 tonnes) with a minimum (P90) of 47.1 BCF (111,738 tonnes) and a maximum (P10) of 238.4 BCF (565,390 tonnes)*
• P50 volume of Helium Prospective Resources is 0.47 BCF with a P90 volume of 0.04 BCF and a P10 volume of 1.63 BCF
• Prospective Resources anticipated to increase a leasing of acreage in the play continues
• Assessment carried out by respected global energy consulting firm, Sproule, and will assist in ranking existing drilling prospects
• Prospective Resources areas are surrounded by mature industrial production facilities and interconnected railroads and highways

Hyterra is focused on the early discovery and development of natural hydrogen and has established a major presence in potentially one of the world's most prolific natural hydrogen in the Mid-West of the USA.

Hyterra's Project Geneva (Nebraska) and Project Nemaha (Kansas) are situated respectively on the western and eastern margins of the Mid-Continent Rift System, an iron-rich band of rocks underlying the Salina Basin widely considered to be the source of multiple historic hydrogen occurrences. In addition to a 16% working interest in the Joint Development Agreement with Natural Hydrogen Energy LLC (the Operator) for Nebraska, the Company has 100% owned and operated lease holdings at Nemaha Ridge, which now spans 9,607 net acres across Riley, Geary and Morris Counties in Kansas calibrated by a geological model and historical wells with occurrences of natural hydrogen and helium. The Company has identified multiple targets covering a diverse range of geological plays for natural hydrogen and helium exploration.

In addition to being prospective for hydrogen, the Nemaha Ridge is cored by Precambrian granites which are capable of generating helium and the elements required for a helium system are present. These are documents occurrences of helium within the play area and further along the Nemaha Ridge. These published occurrences are in the Precambrian formations penetrated in the Sue Duroche #2 well with a helium percentage of approximately 3%, and helium of approximately 0.9% reported in various tests from the Heins #1 well in Geary County¹.

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