Brightstar Resources Limited (ASX: BTR) (Brightstar) is pleased to announce the commencement of Phase two reverse circulation (RC) drilling at the Yunndaga deposit, part of the Menzies Hub which hosts a total current Mineral Resource Estimate (MRE) of 0.6Moz @ 1.4g/t Au.

The Yunndaga area was a substantial historic producer, with Menzies Consolidated Gold Mines extracting over 270koz of gold at an average grade of +16g/t Au1, from 1896 to 1943. Much of this production came from the Princess May workings, which extend to over 600m vertical depth. Open pit mining by Paddington Gold in the mid-1990's produced an additional 64koz of gold at a grade of 2.5g/t Au. The current resource extends to 240m vertical depth, with the recent feasibility study announced in June 20252 highlighting a potential underground operation producing 0.6Mt @ 2.6g/t Au (diluted mined grade) for 50koz Au recovered gold production. Brightstar's phase 1 drilling program targeted initial infill of the resource in areas optimised for underground production. Significant high-grade mineralisation was intersected, including 16m @ 8.03g/t Au from 220m in YNRC250223, highlighting the wide, high-grade zones of mineralisation present at the deposit. The second phase aims to both step out from these infill areas, and target extensions to the resource, both at depth and along strike to the north. Importantly, the diamond drilling component of the program will also provide crucial geotechnical data and metallurgical samples, facilitating further development work at the deposit.

Brightstar's Managing Director, Alex Rovira, commented: 'The next phase of drilling at Yunndaga is a key piece of our fast-tracked Menzies development plans. Recent exploration and study work has outlined the potential for an underground mining operation that complements the proposed Lady Shenton open pit mine to the north, and we are keen to further de-risk the project as well as test the exploration upside we see outside of the resource. The combined diamond and RC drilling program will provide the geological, geotechnical, and metallurgical data to progress the deposit to the next stage, with a number of holes also targeting extensions to the resource and optimised mine plan

Next Steps

Brightstar currently has three surface drill rigs operating at the Laverton, Menzies and Sandstone Hubs. At Laverton, a diamond rig is currently drilling extensions to the RC pre-collars completed last month, testing the Fish deposit at depth with extensional and infill drilling designed at proving up mine life extension to the operating underground mine. At Menzies, the Yunndaga RC program is now underway, whilst the RC exploration drilling continues at the Sandstone Gold Project. Assays results will be reported to the market as they are received and analysed by Brightstar's technical team.

Contact:

Alex Rovira

Email: alex@brightstarresources.com.au

Lucas Robinson

Tel: +61 408 228 889

Email: lucas@corporatestorytime.com

ABOUT BRIGHTSTAR RESOURCES

Brightstar Resources Limited is an emerging gold development company listed on the Australian Securities Exchange (ASX: BTR) and based in Perth, WA. The Company hosts a portfolio of highquality assets hosted in the Tier-1 jurisdiction of Western Australia, with 3.0Moz of Mineral Resources across the Goldfields and Murchison regions, ideally located near key infrastructure such as sealed highways and on granted mining leases for ready development. Brightstar owns and operates the underground Second Fortune and Fish Gold Mines south of Laverton, which are processed by Genesis Minerals Ltd (ASX: GMD) at their Laverton Mill under an Ore Purchase Agreement. A Definitive Feasibility Study on the Menzies and Laverton Gold Projects, released in June 2025, outlined the production of approximately 70,000oz per annum for five years across several open pit and underground mines. This production is set to deliver excellent financial metrics, including life-of-mine cash flows of A$461 million and internal rate of return (IRR) of 73% at A$5,000/oz gold price. Brightstar aspires to be a leading mid-tier gold miner via a staged growth strategy, with current operations and proposed expansions providing a great platform for growth.

(C) 2025 Electronic News Publishing, source ENP Newswire