enCore Energy Confirms Uranium Mineralisation Extending Over 3,700 Feet at Alta Mesa East

• enCore Energy Corp. has reported initial exploration drill results from its 5,900-acre Alta Mesa East (AME) property, confirming uranium mineralisation extending more than 3,700 feet east of the nearest existing Alta Mesa wellfield.
• Of 17 holes reported, 10 intersected mineralisation; 6 returned grade thickness (GT) values ranging from 0.351 to 2.297, meeting or exceeding the 0.3 GT threshold considered suitable for wellfield inclusion.
• Mineralisation has been identified within the Middle C sands at depths averaging between 400 and 460 feet, and within the Lower C sands between 480 and 520 feet, all within the Pliocene Goliad Formation.
• Currently, 6 drilling rigs are active across the AME property, with 7 widely spaced east-west fences of drilling underway for regional characterisation; additional results are pending.
• The AME project targets the continuation of productive roll fronts from existing Alta Mesa wellfields, with the intent of permitting and expanding in-situ recovery (ISR) operations eastward from current production infrastructure.

Company Overview

enCore Energy Corp. (NASDAQ: EU | TSXV: EU) is a US-focused uranium producer operating exclusively via In-Situ Recovery (ISR), a minimally intrusive and economically competitive extraction methodology. The company's flagship operations are based in South Texas at the Alta Mesa facility, with a development pipeline that includes the Dewey Burdock project in South Dakota and the Gas Hills project in Wyoming.

Drill Results Confirm Eastward Mineralisation Continuity

enCore Energy has released initial exploration drill results from its Alta Mesa East (AME) property, which is immediately adjacent to its producing Alta Mesa wellfields and extraction operations in South Texas. The results confirm uranium mineralisation extending more than 3,700 feet to the east from the nearest existing wellfield, validating the geological thesis underpinning the AME expansion strategy.

Of the 17 drill holes included in the initial results package, 10 intersected mineralisation within targeted sand horizons. Of those, 6 returned grade thickness (GT) values ranging from 0.351 to 2.297. A GT of 0.3 is the company's stated threshold for suitability for wellfield inclusion. 

Executive Chairman of enCore Energy, William M. Sheriff, commented on the significance of the initial results:

"Our initial drill results from Alta Mesa East have reconfirmed our expectations of encouraging uranium grades across all major mineralised sand units known to exist at Alta Mesa. Uranium extraction efforts from these sand units at the Alta Mesa wellfields have generated solid results, including current operations at wellfield 7. An aggressive drill program is underway with additional results pending."

All reported mineralised intercepts lie within the Pliocene Goliad Formation, which hosts four saturated sand horizons identified as amenable to ISR operations. The water level at the project sits approximately 180 feet below the surface, a structural characteristic that supports the ISR extraction methodology.

Geology & Drilling Methodology

The AME project covers 5,900 acres and targets the eastward continuation of roll fronts currently being extracted across the existing Alta Mesa wellfields. Exploration focus is directed at mineralisation within the B sands, Middle C sands, Lower C sands, and potentially the D sands in the northeast areas of the property.

Initial exploration drilling is being conducted on 400 and 500 foot centres, with closer spacing applied in mineralised areas. For regional geological characterisation of the property, 7 widely spaced east-west drilling fences are underway. Individual drill holes are averaging a total depth of approximately 600 feet below the surface. Middle C sand mineralisation has been encountered at average depths of between 400 and 460 feet, while Lower C sand mineralisation has been encountered between 480 and 520 feet.

Operational Context

The AME property is situated directly adjacent to enCore's operating Alta Mesa facility, which provides a material logistical and infrastructure advantage for any future expansion of ISR wellfields into the eastern acreage. The company's stated objective for the AME drilling programme is to outline mineralisation at sufficient density to support permitting applications and the eventual extension of active ISR operations from the existing Alta Mesa wellfield infrastructure.

The AME programme is designed to leverage the geological continuity already demonstrated across the producing Alta Mesa wellfields, where the same sand units now intersected in exploration drilling have formed the basis for productive extraction. Current operations at wellfield 7 are referenced by the company as illustrative of extraction performance from these horizons.

Next Steps

Currently, 6 drilling rigs are active at the AME property, and the company has described the drill programme as aggressive, with further results pending beyond the initial 17 holes reported. The exploratory drilling is designed to provide the geological framework required to guide permitting and the expansion of ISR operations from the existing Alta Mesa infrastructure into the AME property.

Beyond Alta Mesa, enCore's stated future project pipeline includes the Dewey Burdock project in South Dakota and the Gas Hills project in Wyoming, both of which are identified as future development priorities alongside the AME expansion.

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