Brightstar Hits Visible Gold at Two Mile Hill; Assays Are the Real Test

The current Two Mile Hill infill program totals about 9,100 metres across 20 drill holes, using RC pre-collars with diamond tails. One disclosed RC pre-collar, TMHRCD26001, reached 511 metres before the diamond component, highlighting the depth and technical character of the program. Brightstar said assays for all holes are pending and expected in coming weeks. The company said the drilling is targeting a resource-confidence upgrade to support the Sandstone PFS targeted for delivery in 2H CY26. Management also indicated the results could support a meaningful contribution from an underground operation at Two Mile Hill to that study, subject to assays, subsequent modelling and ongoing study work.

In late April, Brightstar's quarterly update said the company had completed a A$193 million equity raising and a US$120 million senior secured bond to finance the Goldfields development and progress Sandstone drilling and feasibility work. More recently, on 25 May 2026, Brightstar said its board had approved final investment decision for the 100% owned Goldfields Project, supported by key approvals including the Mining Development and Closure Proposal from DMPE and a Part V Works Approval from DWER, along with an EPC contract with GR Engineering Services Limited for a 1.5Mtpa Laverton processing plant.

The first milestone to watch is straightforward: assays from the current Two Mile Hill holes. That is the point at which the market can test whether the visible gold observations line up with grades and widths capable of improving resource classification and reinforcing an underground mining case. After that, the next likely step is updated geological interpretation and resource work feeding the Sandstone study pipeline. Earlier company guidance pointed to mineral resource updates during CY26 and a PFS in 2H CY26.

There is also a practical portfolio question. Brightstar is already balancing Sandstone against execution of the Goldfields build, including the 1.5Mtpa Laverton processing plant and a first-gold target in the June quarter of 2027, according to the company's recent filings. That creates a watchpoint around management bandwidth and capital deployment, even if Sandstone remains the longer-dated development option.

What would confirm the setup: assays showing grade and width consistent with a resource upgrade, particularly in the higher-confidence categories. What would weaken it: assays that disappoint relative to visual impressions, or resource conversion that proves harder than hoped. The main risks were largely spelled out by Brightstar in earlier disclosures. Future development still sits under permitting, heritage and execution requirements. The company's annual report also highlighted ongoing sensitivity to gold prices, funding conditions and project delivery. And while Brightstar has moved toward owned processing at Laverton, its historic monetisation model has relied on third-party processing arrangements, underlining that Sandstone still needs to move from resource scale to a study-backed, financeable development case.

Assays in the coming weeks will provide the first real test of whether the visible gold translates into a resource upgrade. Until then, the observation is a data point, not a conclusion.