Resource Growth Hinges on Eaglehawk Extensions and Ironbark Study Progress

Exploration Momentum Builds at Eaglehawk

Great Boulder Resources (ASX: GBR) has delivered a fresh tranche of encouraging exploration results from its flagship Side Well Gold Project in Western Australia. The latest reverse circulation (RC) drilling at the Eaglehawk deposit has confirmed the presence of shallow, high-grade gold mineralisation, reinforcing the prospectivity of this mineralised system. Notable intercepts include 3 metres at 8.98 grams per tonne (g/t) gold from 136 metres depth, including a standout 1 metre at 20.70 g/t, and 12 metres at 2.47 g/t from 70 metres, with a 3-metre section grading 5.39 g/t.

These results complement previously reported high-grade intersections such as 26 metres at 5.15 g/t from 79 metres and an exceptional 3 metres at 46.70 g/t from 139 metres, underscoring the continuity and richness of mineralisation within the dacite host unit. The company has completed a 20-hole RC campaign at Eaglehawk and is designing follow-up drilling to test lateral and depth extensions of the mineralised zones.

Air-Core Drilling Expands Target Zones

In parallel, air-core (AC) drilling targeting the corridor between Mulga Bill and Eaglehawk has intersected additional mineralisation in previously untested areas. Highlights include 3 metres at 4.53 g/t gold from 130 metres to end of hole, 9 metres at 1.67 g/t from 88 metres, and 14 metres at 1.42 g/t from 86 metres. These findings suggest the potential for mineralised zones to link up between the two prospects, expanding the footprint of the gold system.

Great Boulder’s Managing Director Andrew Paterson emphasised the effectiveness of combining AC drilling to refine targets with RC drilling to test high-grade zones at depth. He noted that the company is well advanced in the AC program at Eaglehawk, which is helping to define new shallow gold mineralisation and refine resource targets.

Resource Growth and Project Development

The Side Well Gold Project currently hosts a Mineral Resource Estimate (MRE) of 668,000 ounces of gold at an average grade of 2.8 g/t. The ongoing drilling campaigns at Eaglehawk and Mulga Bill are expected to contribute to resource growth, with mineralisation remaining open along strike and at depth. The company is optimistic that further drilling will add substantial ounces to the resource base.

Meanwhile, the Ironbark deposit, another key asset within the Side Well project, is undergoing a scoping study scheduled for completion this quarter. This study will provide critical insights into the deposit’s development potential and economics.

Community Engagement and Next Steps

Great Boulder is actively engaging with the Yugunga Nya Traditional Owners to negotiate mining agreements, a vital step for advancing the Ironbark deposit and broader project development. Discussions are ongoing, with plans to finalise agreements in the coming weeks.

Following completion of the Eaglehawk AC program, drilling will shift to Side Well South to follow up on high-grade gold discoveries from earlier campaigns. The company continues to await assay results from recent drilling and looks forward to releasing further updates as they become available.

Overall, Great Boulder’s systematic and technically focused exploration approach is generating consistent newsflow and advancing the Side Well project towards its next phase of growth.