Gorilla Gold Mines (ASX:GG8) extends high grade mineralisation at Mulwarrie as multi rig program advances

Gorilla Gold Mines has recommenced drilling across its Western Australian gold portfolio, reporting high grade extensional results from the 100% owned Mulwarrie Gold Project that extend mineralisation beyond the current 350koz at 3.6g/t Au Mineral Resource Estimate, while parallel development studies and a multi rig campaign are now underway at both Mulwarrie and Comet Vale.

Highlights

• Drilling resumed in early January 2026 with 2 rigs at Mulwarrie and 3 rigs at Comet Vale
• High grade step out intercepts below the August 2025 MRE including 3.4m @ 12.5g/t Au and 6.2m @ 2.2g/t Au, both 50m down dip of the current resource envelope
• Shallow northern extension returning 3.0m @ 4.2g/t Au
• Current Mulwarrie MRE of 350koz at 3.6g/t Au, comprising 3,000kt at 3.6g/t Au
• Comet Vale Mineral Resource of 0.86Moz at 3.7g/t Au, with 3 rigs now active supporting growth and redevelopment studies
• Engineering, geotechnical and metallurgical programs commenced at Mulwarrie to advance the project towards development

The latest assays derive from diamond and RC holes drilled late in 2025 targeting extensions beyond the existing Mulwarrie Mineral Resource, which stands at 3,000kt at 3.6g/t Au for 350koz, including both open pit and underground components reported at cut offs of 0.5g/t Au and 1.1g/t Au respectively.

Intercepts of 3.4m @ 12.5g/t Au from 350.6m in hole MWEX044 and 6.2m @ 2.2g/t Au from 280.6m in MWEX045 were recorded approximately 50m down dip of the current modelled resource envelope, while a near surface intercept of 3.0m @ 4.2g/t Au in MWEX007 highlights continuity in the northern part of the system.

Mulwarrie hosts multiple stacked lodes developed within a steeply dipping fault system and associated quartz sulphide veining, extending from surface across a mineralised width of 200m to 300m and over at least 2.5km of strike, remaining open both to the north and south.

The project is located on granted Mining Leases, approximately 10km from the Davyhurst Mill and 60km from the Comet Vale Project, positioning it within established Goldfields infrastructure.

Gorilla is pursuing a dual track strategy of resource growth and technical de risking.

In fill and step out drilling is aimed at both extending the mineralised envelope and upgrading portions of the resource into higher confidence categories, while geotechnical, engineering, metallurgical and conceptual mine design studies have commenced to support future development pathways.

This work is intended to underpin a potential Mineral Resource upgrade and subsequent mining studies.

Chief Executive Officer Charles Hughes noted the significance of the extensional results and the scale of the ongoing program, stating that

“these holes confirm that high grade mineralisation continues beyond the current MRE envelope, highlighting the robust nature of the multi lode gold system at Mulwarrie”,

while outlining that multiple workstreams are now advancing in parallel across drilling, resource definition and development studies.

At Comet Vale, 3 rigs are also operating to support both exploration and redevelopment activities around the existing 0.86Moz at 3.7g/t Au Mineral Resource, while the Company is concurrently assessing redevelopment opportunities at the Vivien Project.

The coordinated multi asset, multi rig approach reflects a focus on simultaneous resource growth and technical advancement across Gorilla Gold’s Goldfields portfolio.

Looking ahead, the current phase of drilling at Mulwarrie represents the first stage of a broader program designed to significantly grow the Mineral Resource during 2026, while ongoing studies aim to establish the technical foundations for potential development.

In the context of the current gold price environment, the combination of high grade extensional results, expanding resource inventories at both Mulwarrie and Comet Vale, and the commencement of engineering and metallurgical work positions the Company to progress both exploration and development objectives across its Western Australian assets over the coming year.

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