Tunkillia Gold Project Drilling Expansion Uncovers Major Growth Potential
Adelaide, Tuesday, 16 June 2026.
Australia’s Tunkillia gold project has expanded its drilling program to 40,000 meters after interim assays revealed high-grade mineralization and potential resource extensions. With a projected A$1.75 billion in early profits, this could redefine Australia’s gold production landscape.
Barton Gold’s Strategic Expansion
Barton Gold Holdings Limited (ASX:BGD, OTCQB:BGDFF, FRA:BGD3) has significantly expanded its reverse circulation (RC) drilling program at the Tunkillia Gold Project in South Australia. The company announced on 15 June 2026 that Phase 2 drilling would increase by approximately 10,500 meters, bringing the total to around 40,000 meters [1]. This expansion follows the completion of 18,900 meters during Phase 1, which concluded in November 2025 [1]. The decision to extend drilling reflects growing confidence in the project’s potential to enhance resource estimates and improve grade profiles within existing pit outlines [1].
Economic Projections and Early Cash Flow Potential
The Tunkillia Gold Project’s economic viability was underscored in its May 2025 Optimised Scoping Study (OSS), which projected robust financial metrics. The study estimated an annual production of 120,000 ounces of gold and 250,000 ounces of silver, with a total life-of-mine (LoM) operating cash flow of A$2.7 billion (unlevered, pre-tax) [1]. The project’s net present value (NPV) at a 7.5% discount rate was calculated at A$1.4 billion (unlevered, pre-tax), with an internal rate of return (IRR) of 73.2% and a payback period of 0.8 years [1]. Notably, the S1 and S2 starter pits are expected to generate A$1.3 billion in operating free cash flow within the first approximately 27 months of production, based on gold and silver prices of A$5,000 per ounce and A$50 per ounce, respectively [1]. At current market prices, this revenue projection increases to approximately A$1.75 billion [1].
Interim Assays Signal Resource Growth
Interim analysis of assays from the ongoing Phase 2 drilling program has revealed significant upside potential across multiple zones within the Tunkillia project. Key areas of interest include the high-value ‘Starter’ pit zones, potential extensions of the main open pit, and higher-grade mineralization at the ‘Area 51’ open pit [1]. These findings suggest the possibility of extending mineralization, increasing JORC-compliant Mineral Resources, and enhancing the overall grade profile within the existing pit outlines established in the May 2025 OSS [1]. Barton Gold’s Managing Director, Alexander Scanlon, emphasized the project’s financial leverage, stating, ‘Tunkillia’s OSS demonstrated its financial and capital leverage, with robust economics driven by higher-grade ‘Starter Pits’ modelled to generate A$1.75bn operating profit during the first 2.5 years at current gold and silver prices’ [1].
Drilling Expansion Aims to Boost Resource Confidence
The expanded Phase 2 drilling program is designed to further define and potentially increase the quantum and grade of resources within Tunkillia’s optimised open pit outlines. Scanlon noted, ‘With recent ‘Phase 1’ upgrade drilling confirming the mineralisation behind these economics, and ongoing ‘Phase 2’ drilling identifying new extensions and higher grade mineralisation, we are excited to expand drilling with the objective to potentially increase both the quantum and grade of Resources’ [1]. This strategic move could materially enhance the project’s economics by adding new gold and silver ounces, reducing early cash costs per ounce, and amplifying its early cash flow profile [1]. All work programs remain on track for the completion of a Pre-feasibility Study (PFS) by 31 December 2026, which will inform subsequent Mining Lease applications and project finance discussions scheduled for 2027 [1].
Global Context: West Africa’s Emerging Gold Corridor
While Tunkillia advances in Australia, another significant gold discovery has emerged in West Africa. Dalaroo Metals (ASX:DAL) recently defined a 7-kilometre gold corridor at its Bondoukou project, with peak soil assays returning 23.26 grams per tonne (g/t) gold [2][3]. A 5,000-meter auger drilling program is currently underway to further assess the project’s potential [2][3]. This development underscores the global competition in gold exploration and the increasing importance of high-grade discoveries in shaping future production landscapes [GPT].