Latest Underground Development News

Tolu Minerals has revealed two new high-grade gold vein discoveries at its Tolukuma Gold Mine in Papua New Guinea, underpinning an ambitious near-mine drilling campaign aimed at boosting resource growth.

Green Technology Metals (ASX: GT1) is pushing forward its Seymour lithium project with an $11 million recapitalisation underway and fresh additions of tantalum and rubidium processing streams aimed at boosting project economics.

Hillgrove Resources detailed its 2026 growth strategy at the AGM, highlighting a copper production increase, exploration advances, and a farm-in deal at Mutooroo to leverage existing infrastructure amid a tightening global copper market.

Greatland Resources has clinched both state and federal environmental approvals for its Havieron gold-copper project, paving the way for a Final Investment Decision targeted in June 2026 and advancing construction activities.

Meeka Metals has kicked off ore development at Judy North within its Andy Well underground mine, targeting a 96,000-ounce high-grade gold resource. Development is expanding across multiple levels, with grades aligning with resource estimates and potential for improvement at depth.

Ballymore Resources has pushed the boundaries of its Torpy’s silver-lead-zinc-indium discovery in North Queensland, with initial results from a fresh 3,000m drilling campaign revealing broad zones of massive sulphide mineralisation closer to surface. Assays are due in June, while a government-backed gravity survey aims to unlock further targets across the Ruddygore corridor.

West Wits Mining has locked in a ZAR 875 million senior loan facility with Absa and Nedbank, replacing earlier funding and boosting support for its Qala Shallows project; the first new South African gold mine in over 15 years.

Barton Gold’s recent drilling at the Challenger Gold Project confirms new open-pittable mineralisation at Challenger South-Southwest and Challenger 3, underpinning potential resource upgrades and a low-risk mill restart.

Aguia Resources has implemented optimized narrow vein mining at its Santa Barbara Gold Project in Colombia, pushing head grades to 12 g/t Au and improving recoveries, signaling a step-up in production quality.

Core Lithium has kicked off mining at the Grants open pit within its Finniss Lithium Operation, aiming to process ore by September and ship spodumene concentrate by December. This milestone advances the company's production restart on schedule.

Broken Hill Mines (ASX: BHM) has resumed mining at its Pinnacles Silver-Lead-Zinc Mine, marking its first operations since 2021 and aiming to ramp up production through multiple ore feeds to the Rasp processing plant.

Ballymore Resources has kicked off a detailed gravity survey across a 32km corridor at its Ruddygore Project, aiming to refine targets for silver-lead-zinc and skarn-porphyry deposits. Funded by $383,000 in Queensland government grants, the survey complements ongoing high-grade drilling at Torpy's.