Great Boulder Resources (ASX:GBR) has struck a transformative deal to acquire Westgold’s Peak Hill Gold Project, adding nearly half a million ounces of gold resources and securing a strategic partnership to fast-track production.
- Acquisition adds 481,000oz gold resource at Peak Hill
- Deal includes $25 million cash, 19.9% equity, and 1% NSR royalty
- Ore Purchase Agreement enables capital-light near-term production
- Strategic collaboration to accelerate Side Well Gold Project
- Concurrent $40 million placement to fund aggressive drilling
Transformational Acquisition Boosts Great Boulder’s Gold Inventory
Great Boulder Resources (ASX:GBR) has agreed to acquire the Peak Hill Gold Project from Westgold Resources (ASX:WGX) in a deal valued at $25 million cash plus a 19.9% equity stake in Great Boulder and a 1% net smelter royalty. This acquisition adds a substantial JORC 2012 Mineral Resource Estimate of 9.4 million tonnes at 1.6 grams per tonne gold for 481,000 ounces to Great Boulder’s portfolio, complementing its flagship Side Well Gold Project, which already hosts over 1 million ounces of gold. The Peak Hill project, with a rich history of over 900,000 ounces produced, includes four historic open pit mines and seven granted mining leases across 106 square kilometres in Western Australia’s Northern Murchison Goldfields.
The deal is structured to foster a long-term partnership: Westgold will hold nearly a fifth of Great Boulder’s shares post-transaction and placement, securing a board nomination right and participation rights in future capital raisings. This equity component reflects Westgold’s confidence in Great Boulder’s capability to develop both Peak Hill and Side Well, which lie only 100 kilometres apart. Great Boulder also signed an Ore Purchase Agreement (OPA) with Westgold to process ore at any of Westgold’s three regional mills, Bluebird, Fortnum, and Tuckabianna, enabling a capital-light, near-term production pathway leveraging existing infrastructure.
Aggressive Drilling Campaign and Resource Update Planned
Great Boulder is gearing up for a 60,000-metre multi-rig drilling campaign over the next six months across both Peak Hill and Side Well, aiming to update the Mineral Resource Estimate at Peak Hill within half a year. This intensive program will include validation, infill, and extensional drilling at key deposits such as Five Ways, Jubilee, Harmony, Enigma, Durack, Mt Pleasant, and the Treasure area, with a focus on confirming historical data and exploring near-mine extensions. The company aims to achieve “mining-ready” status at Peak Hill within 12 months of completion, although these timelines remain aspirational pending drilling and regulatory approvals.
Peak Hill’s five main deposits host a combined indicated and inferred resource of 481,000 ounces, with grades ranging from 1.2 to 1.9 g/t Au across various deposits. The project also carries a conceptual Exploration Target of 600,000 to 740,000 ounces, highlighting significant upside potential pending further drilling. Notably, recent Westgold drilling in 2025 returned high-grade intersections such as 19 metres at 13.34 g/t Au and 10 metres at 18.79 g/t Au in the Treasure area, underscoring the brownfields exploration upside.
Strategic Collaboration to Accelerate Side Well Development
Beyond Peak Hill, Great Boulder and Westgold have entered a non-binding Strategic Collaboration to evaluate opportunities to fast-track the development of the Side Well Gold Project, located just 25 kilometres from Westgold’s Bluebird mill. This partnership aims to unlock operational synergies, including shared haulage, contractor networks, technical support, and infrastructure efficiencies, potentially accelerating production and enhancing cash flow from both projects. While non-binding, this collaboration signals Westgold’s continued support for Great Boulder’s growth trajectory in the Murchison region.
Great Boulder’s Managing Director Andrew Paterson highlighted the transformational nature of the acquisition, emphasizing the capital-light production pathway enabled by the OPA and the strong funding position following the concurrent $40 million placement at 8.5 cents per share. The placement, split into two tranches with the second subject to shareholder approval expected in mid-June 2026, aims to underpin the aggressive drilling and pre-production activities. The company’s cash balance is expected to stand at $25 million post-completion, providing a robust runway for exploration and development.
Experienced Leadership and Regional Positioning
The appointment of Chris Tuckwell as Chair, formerly Managing Director of Australia’s largest open-pit mining contractor MACA Limited, adds operational expertise to Great Boulder’s board as it prepares for pre-production activities. The combined projects position Great Boulder as a significant player in the Murchison goldfields, benefiting from proximity to established milling infrastructure and a supportive regional mining ecosystem.
Great Boulder’s Side Well Gold Project has recently been in the spotlight following extraordinary high-grade intercepts, including a 0.25-metre hit grading 4,434 g/t gold, and a 1.02 million ounce resource update, underpinning the company’s growth momentum. This acquisition and the strategic partnership with Westgold build on that momentum, potentially accelerating Great Boulder’s path to production and value creation in a strong gold price environment. The company’s next steps include shareholder approval for the placement and acquisition, ongoing drilling results, and advancing pre-production studies.
Given the scale of the acquisition and the strategic collaboration, market participants will be keen to watch how Great Boulder balances exploration success with operational execution, particularly as it seeks to leverage Westgold’s milling capacity and fast-track Side Well alongside Peak Hill. The capital-light production model hinges on timely drilling results and regulatory consents, with shareholder support critical to unlocking the full potential of this deal.
Great Boulder’s move to consolidate neighbouring gold projects and secure processing infrastructure through Westgold reflects a broader trend in the gold sector where mid-tier explorers seek to de-risk development by partnering with established producers. Whether this strategy translates into near-term production and sustained resource growth remains to be seen, but the company’s aggressive drilling program and strong funding position set a solid foundation.
Investors should monitor the upcoming shareholder meeting in mid-June, drilling progress, resource updates, and any further operational milestones that could clarify the timeline and scale of production at both Peak Hill and Side Well.
Great Boulder’s recent Side Well high-grade intercepts and resource expansion updates provide important context for the company’s capacity to execute on this expanded portfolio.
Bottom Line?
Great Boulder’s Peak Hill acquisition and Westgold partnership create a promising but aspirational platform for capital-light gold production, with drilling results and shareholder approvals key to unlocking value.
Questions in the middle?
- Will Great Boulder’s drilling confirm and expand Peak Hill’s resources as planned?
- How effectively can Great Boulder leverage Westgold’s milling infrastructure for near-term production?
- What are the chances the Strategic Collaboration accelerates Side Well’s development timeline?