Latest Underground Mining Studies News

Rumble Resources has outlined a preliminary A$86 million pre-tax NPV for Western Queen, with a 45% IRR and almost four years of planned underground production. The study also leaves room for tungsten upside, but financing, approvals and a feasibility study remain unresolved.

Brightstar Resources has secured A$82 million to accelerate exploration and early development work at Sandstone, where Two Mile Hill is emerging as a potential cornerstone asset. Genesis Minerals will invest A$30 million for a 5.4% stake, while Brightstar says Goldfields construction remains separately funded and on schedule for first gold in the June quarter of 2027.

Brightstar Resources has secured A$82 million from institutional and strategic investors, including a A$30 million cornerstone investment from Genesis Minerals. The funding will accelerate drilling, feasibility work and early mine development at the Sandstone Gold Project while Goldfields construction remains separately funded for first gold in the June quarter of 2027.

Brightstar Resources has nearly doubled the Two Mile Hill-Shillington Mineral Resource to 1.45 million ounces, with the Indicated component rising 177% to 526,000 ounces. The result lifts the broader Sandstone Gold Project to 3.6Moz, while assays from deeper drilling could provide another resource catalyst later in 2026.

Ausgold Limited is ramping up its drilling efforts at the Katanning Gold Project with an imminent 25,000m infill program aimed at tightening drill spacing and underpinning early mine life. Recent results confirm robust resource growth potential and support advancing underground mining studies at Datatine.

Brightstar Resources has intersected visible gold in multiple deep diamond drillholes at Two Mile Hill, part of its Sandstone Gold Project. The drilling extends beyond 550m depth, underpinning plans for an underground mining study in the pre-feasibility study due later this year.

CuFe’s expanded scoping study for its Orlando copper-gold project integrates underground mining and new bismuth and silver revenue streams, lifting project NPV to A$908 million at spot prices and shortening payback to 10 months.

CuFe Ltd has significantly upgraded the Orlando Copper-Gold Deposit resource classification at Tennant Creek, boosting Indicated tonnes to 87% and enabling underground mining studies. This milestone enhances the project’s economic outlook with critical minerals now factored into upcoming development plans.

Broken Hill Mines reveals a large, continuous zone of exceptionally high-grade silver-lead-zinc mineralisation at its Pinnacles Mine, with grades soaring up to 1,556g/t AgEq. The discovery bolsters plans for accelerated underground development alongside near-term open pit operations.

Savannah Goldfields has reported promising high-grade gold intercepts from recent drilling at its Electric Light prospect, part of the Georgetown Gold Project in Queensland. The company plans to update its mineral resource estimate and explore mining options.

Capricorn Metals has released a conceptual study indicating promising underground mining opportunities at its Orion South deposit within the Mt Gibson Gold Project, potentially boosting gold production beyond current open pit plans.

Aeris Resources has announced a maiden open pit Probable Ore Reserve for its Constellation Project in New South Wales, underpinning a 5-to-7-year mine life and leveraging existing Tritton processing infrastructure.