Great Boulder Resources Limited (ASX:GBR): How Do Peak Hill and Side Well Shape the 2026 Programme?

Aditi Sarkar

06 November 2026 02:45 AM AEDT

Great Boulder Resources Limited (ASX:GBR): How Do Peak Hill and Side Well Shape the 2026 Programme?

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Highlights

Great Boulder acquired the Peak Hill Gold Project in May 2026.
Peak Hill hosts a stated 481,000-ounce JORC Mineral Resource across five deposits.
The company targets development readiness through drilling and evaluation work.
Side Well has a published Mineral Resource of approximately 1.021 million ounces.

Great Boulder Resources Limited (ASX:GBR) explores and evaluates gold projects in Western Australia, particularly Side Well near Meekatharra and the Peak Hill Gold Project farther north. Shares closed at AUD 0.063 on 5 November 2026. The 2026 programme expanded the company’s project exposure through the Peak Hill Acquisition and involved drilling to define potential Mining areas. The financial and technical distinction is between resource definition, preparation for development and the commencement of actual gold production.

Peak Hill Acquisition and Resource Base

Great Boulder reported the acquisition of Peak Hill in May 2026, adding a project with a stated JORC 2012 Mineral Resource of approximately 481,000 contained gold ounces at an average grade of 1.6 grams per tonne across five deposits. The project is located about 100 kilometres north of Meekatharra and includes granted mining leases. The company has described an ore purchase arrangement for potential treatment at nearby processing facilities. Such an arrangement may shape a future development plan, but it does not establish current commercial mining volumes. Great Boulder has outlined an intention to progress Peak Hill toward production by the end of 2027; this remains a company objective subject to work programmes and decisions. For (ASX:GBR), material to watch includes mineral resource revisions, metallurgical testing, geotechnical assessment and mining preparation. None should be presented as equivalent to completed production.

Side Well Exploration and 2026 Drilling

The company’s Side Well project carries a stated combined Mineral Resource of about 1.021 million ounces at 2.0 grams per tonne gold. Exploration focuses on areas including Mulga Bill, Eaglehawk and Ironbark, as well as further targets along the gold-bearing corridors. Great Boulder reported a March 2026 deep drill intersection at Mulga Bill of 1.93 metres grading 574.39 grams per tonne gold, including 0.25 metres at 4,434 grams per tonne. The reported interval illustrates a local high-grade intersection, not the grade of the entire deposit; drill lengths should not be assumed to equal true widths. The company also described new lodes west of its existing resource outline in 2026. Continued drilling is required to establish continuity and determine whether additional mineralised zones can be included in revised resources. For (ASX:GBR), high-grade drill results are exploration evidence rather than operating revenue.

Development Work, Expenditure and Risks

During the September 2026 quarter the company undertook substantial drilling at Peak Hill, working across known deposits and exploration targets. Peak Hill and Side Well represent different possible routes to development, and allocation of expenditure between them will affect the pace of technical work. An ore purchase agreement and nearby processing infrastructure can be relevant to future options, but mining access, ore characteristics, metallurgical recoveries and commercial terms must still be assessed. Drilling may produce results that are geologically useful without immediately changing a resource estimate. For (ASX:GBR), relevant financial indicators include exploration cash outflows, funding availability and Capital commitments before a construction decision. The company’s proposed 2027 production timing also depends on studies, permitting, contractor availability and approvals. Investors can monitor later 2026 resource and programme updates for evidence of how the company is resolving those uncertainties.

Key Insights

Great Boulder’s 2026 activity combines Peak Hill development planning with Side Well resource extension work. The projects have stated mineral inventories and current drilling activity, but neither a resource nor a high-grade interval is proof of production. For (ASX:GBR), future reporting on updated resources, metallurgy, funding and development readiness will clarify the progress of each asset.

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