OzAurum Resources Unveils Strong Heap Leach Outcomes at Mulgabbie North Gold Project

4 min read | July 08, 2026 12:35 AM AEST | By Anjali Anand

OzAurum Resources Ltd has revealed outstanding metallurgical outcomes from heap leach testing at the James Stage 1 Open Pit within its Mulgabbie North Gold Project in Western Australia. These findings suggest a viable low-capital expenditure development approach, highlighting considerable potential for upcoming gold production. This progress is particularly significant for investors as the company moves closer to initiating near-term production.

Key Points

  • Company and ASX code: OzAurum Resources Ltd (OZM)
  • Primary update: Exceptional heap leach metallurgical results at Mulgabbie North
  • Notable statistics: Gold recovery rates up to 82%, with potential to reach 88% through finer crushing
  • Investor focus: Finalisation of heap leach plant refurbishment and start of production

Heap Leach Testing Shows High Gold Recovery Rates

OzAurum Resources Ltd announced promising heap leach metallurgical test results from the Mulgabbie North Gold Project. Column test work conducted at the James Stage 1 Open Pit achieved gold recoveries as high as 82% from deeper saprolite and transition ores, indicating strong potential for efficient gold extraction and a low-cost production model.

The company noted that reducing the crush size to 8mm could increase laboratory recovery rates to 88%, presenting a strategic opportunity to boost gold recovery and enhance the project's economic feasibility. These improvements align with OzAurum's objective to establish a sustainable production cycle.

Progress on Plant Refurbishment and Production Schedule

Advancing its near-term production plan, OzAurum is nearing completion of the heap leach plant refurbishment, carried out by Polaris Engineering. Key components have undergone dry commissioning, marking an essential step toward operational readiness. The agglomeration plant components are expected to be delivered to the Mulgabbie North site soon, following installation of the feed spray bar.

Although unseasonably heavy rainfall caused delays in concrete foundation work, the company remains optimistic about commencing foundation pours shortly. These developments are critical to OzAurum's strategy to begin production soon, potentially driving future growth and revenue.

Geological Overview of Mulgabbie North

Located along the Relief Shear, an 8 km gold mineralisation corridor within OzAurum's tenure, the Mulgabbie North Gold Project features high-grade gold mineralisation at fault intersections. This geology provides a promising target for ongoing exploration and development.

Recent drilling has identified several faults, including a north-south fault and late northeast trending faults, influencing gold mineralisation. The presence of quartz veins, pyrite, and arsenopyrite mineralisation in fresh rock further indicates significant gold potential. These geological findings are vital for guiding exploration and drilling plans.

Column Testwork Insights and Expansion Prospects

Column testwork at Mulgabbie North yielded valuable metallurgical data. Column 2, focusing on saprolite and transition ore, achieved an 82% gold recovery rate, with plans to improve this to 88% by adjusting crush size. Column 3, targeting paleochannel ore, is ongoing with encouraging preliminary results.

These outcomes support OzAurum's scalable growth strategy, including Stage 1 development and future Stage 2 expansion, leveraging the extensive mineralised system along the Relief Shear corridor to unlock additional project value.

Low Operating Costs Enhance Project Viability

A key advantage of the Mulgabbie North project is its low operating cost profile. Heap leach testing revealed cyanide consumption rates of approximately 0.21 kg/t, significantly below the industry average of about 0.5 kg/t. This efficiency strengthens the project's economic viability and attractiveness to investors.

OzAurum's emphasis on cost-effective production aligns with its broader goal of establishing a profitable and sustainable mining operation. Maintaining low operating costs could enable higher profit margins, supporting long-term project success.

Strategic Significance of Mulgabbie North

The Mulgabbie North project is strategically important for OzAurum Resources due to its location in the prolific Eastern Goldfields of Western Australia. Its proximity to established gold deposits like Carosue Dam highlights its potential as a major regional gold producer.

OzAurum's exploration focuses on unlocking the project's full potential by targeting high-grade gold zones and expanding resources through systematic drilling and geological analysis, aiming to establish Mulgabbie North as a key asset.

Development Challenges and Risk Management

Despite significant opportunities, the Mulgabbie North project faces typical mining risks such as equipment delivery delays, weather disruptions, and exploration uncertainties.

OzAurum is proactively managing these risks through strategic planning and operational adjustments, demonstrating resilience and commitment to achieving production targets. Investors will watch closely how the company addresses these challenges in the coming months.

Upcoming Milestones for OzAurum Resources

Looking ahead, OzAurum Resources aims to complete the heap leach plant refurbishment and commence production at Mulgabbie North. These milestones will be crucial in transitioning from exploration to production, potentially unlocking significant shareholder value.

Investors should monitor updates on plant readiness and further metallurgical test results, as these will influence the project's economic outlook. Successful execution of the development strategy will be key to OzAurum's competitiveness in the gold mining sector.


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