Latest Ore Reserve Estimates News

Challenger Gold has set early 2029 as the target for commercial production from a stand-alone heap leach operation at its Hualilán project in Argentina. The roadmap brings engineering, drilling and financing into sharper focus, but still depends on a US$15 million debenture refinancing and a much larger project funding package.

Polymetals Resources has boosted the Endeavor Mine’s Mineral Resource to 20.7 million tonnes, adding 1.3 Mt of high-grade sulphide mineralisation in the Upper Main Lode despite ongoing depletion and a more conservative density model.

Lunnon Metals has wrapped up mining at Lady Herial ahead of schedule, producing gold volumes and financial outcomes closely matching its January 2026 Feasibility Study, generating approximately $39 million pre-tax free cash flow.

True North Copper is expanding its Mt Oxide copper district with the Aquila-Chidna discovery now stretching over 2.3km, while progressing a prefeasibility study at Cloncurry due late 2026.

PTR Minerals’ preliminary mine optimisation study for the Rosewood Titanium Project highlights the potential to tap exceptionally high-grade zones early in production, boosting cashflow and reducing upfront costs. Metallurgical tests suggest simpler, lower-cost processing options could yield high-quality titanium products.

Geopacific Resources has completed a drilling campaign at its Woodlark Gold Project, delivering significant high-grade gold intercepts that reinforce and extend known mineralisation, potentially enhancing project economics.

McLaren Minerals has reported its best assay batch yet from the 2026 drilling program at the McLaren Titanium Project, with heavy mineral grades climbing to 5.44% from surface across 1,199 metres.

Maritana Minerals has announced a maiden underground Ore Reserve of 31,600 ounces at Rose Hill, lifting group reserves to 236,000 ounces and setting the stage for gold production in H2 2027.

South32 has boosted the Sierra Gorda copper mine’s Ore Reserves by 61%, extending its reserve life by five years to 2045, underpinned by extensive infill drilling and a planned processing expansion.

McLaren Minerals reported robust assay results from 179 drill holes at its McLaren Titanium Project, revealing a consistent heavy mineral grade averaging 4.96% over 15.8 metres from surface, underpinning resource upgrade and feasibility plans.

Maritana Minerals (ASX:MRT) has reported a 6.3% rise in gold Mineral Resources to 1.86 million ounces and a striking 148% increase in Ore Reserves to 204,100 ounces for FY2026, driven by maiden Ore Reserves at Crake and Kalpini and updates at Boorara.

Westgold Resources reports a 41% jump in gold Ore Reserves to 4.1 million ounces with a 15% grade uplift, achieved at a notably low reserve addition cost of $27 per ounce. The company plans to invest up to $75 million in exploration drilling in FY27 to sustain this growth trajectory.