Barton Gold has reported significant high-grade gold assays up to 60g/t from recent drilling at its Challenger West open pit, reinforcing prospects for a low-risk restart of its Central Gawler Mill operations. The results form part of an 8,065m drilling program supporting an ongoing Definitive Feasibility Study targeting near-surface feed.
- High-grade gold assays up to 60g/t Au in shallow pit floor at Challenger West
- 8,065m RC drilling completed targeting resource upgrades across multiple pits
- DFS underway focusing on Stage 1 operation using historical tailings and near-surface materials
- Pending assays from adjacent Challenger South-Southwest and Challenger 3 targets
- Results to inform resource upgrade and pit optimisation for potential operational restart
Shallow High-Grade Gold Confirmed at Challenger West
Barton Gold Holdings (ASX:BGD) has unveiled assay results from its recent drilling at the Challenger West open pit in South Australia, confirming shallow, high-grade gold mineralisation with grades reaching up to 60 grams per tonne (g/t) Au. These assays complement earlier findings of extraordinary grades up to 170g/t Au in the adjacent Challenger Main pit, reinforcing the potential for near-surface feed to underpin a low-risk operational restart.
The latest results stem from an 8,065-metre reverse circulation (RC) drilling program completed in early 2026, which targeted resource upgrades not only at Challenger West but also at Challenger Main, Challenger South-Southwest (CSSW), and Challenger 3 open pit targets. Barton is awaiting further assay results from CSSW and Challenger 3, which lie along strike of the known mineralisation zones.
Strategic Focus on Low-Risk Stage 1 Operation
Central to Barton Gold’s strategy is the ongoing Definitive Feasibility Study (DFS) aiming to establish a simplified Stage 1 operation. This phase plans to exploit historical higher-grade tailings from Tailings Storage Facility 1 (TSF1) alongside limited, near-surface mineralised materials such as those recently confirmed at Challenger West. By focusing on these accessible feed sources, Barton intends to avoid disturbing the historically high-grade underground mine and existing infrastructure, thereby deferring the technical risks and costs associated with underground mining.
Managing Director Alexander Scanlon highlighted the significance of the Challenger West assays, noting that "these shallow materials regularly grade between 5–20g/t Au, and up to 60g/t Au, and can be accessed by simple excavation to supplement other Challenger feed sources and increase the overall grade profile of mill feed materials." He emphasised that the proximity of this mineralisation to the Central Gawler Mill (CGM) offers an ideal, low-risk feed source to support the operational restart.
Resource Upgrade and Pit Optimisation Efforts
The drilling results validate previous geological models, confirming high-grade mineralisation in the immediate floor of the Challenger West pit. Significant intercepts include 3 metres at 20.6g/t Au from 13 metres and a standout 1 metre at 59.5g/t Au from 15 metres (hole CHB0150), alongside multiple other intervals exceeding 5g/t Au at shallow depths. These findings will feed into an updated JORC (2012) Mineral Resource Estimate, with Barton targeting conversion of resources into Indicated categories and, subject to DFS outcomes, eventual Ore Reserves.
Alongside the RC program, Barton has completed 1,322 metres of diamond drilling to support pit optimisation and resource upgrade efforts. The company is evaluating potential extensions of the Challenger West open pit to capture additional near-surface mineralisation, mirroring recent exploration success at Challenger Main’s M3-SEZ zone. This drilling campaign and subsequent modelling aim to refine mining inventories and maximise the value of accessible ore.
These developments build on Barton’s September 2025 resource announcement, which reported 313,000 ounces of gold (10.6 million tonnes at 0.92g/t Au) adjacent to the CGM. The current drilling program, including the recent high-grade assays, is integral to advancing the DFS and underpinning a staged operational restart.
Regional Development Optionality Enhanced by CGM Restart
Reinstating the Central Gawler Mill not only supports Challenger’s near-term production but also unlocks development optionality for Barton’s wider portfolio, including the Tarcoola and Wudinna gold projects and the high-grade Tolmer silver prospect. These assets could potentially be processed through the CGM, leveraging existing infrastructure to accelerate regional growth.
Barton’s recent drilling news follows closely on the heels of its discovery of unexpected high-grade zones up to 170g/t Au in Challenger’s open pit extensions, which has significantly boosted the company’s resource confidence and operational plans. The combination of these assay results and ongoing DFS work underlines Barton’s methodical approach to de-risking and sequencing its gold production strategy. Barton Gold Uncovers Unexpected 170g/t Au Zones
With further assays pending and DFS milestones approaching, Barton Gold is positioning itself to clarify the economics and timing of a potential restart, balancing resource growth with prudent capital deployment.
Bottom Line?
Barton Gold’s confirmation of shallow, high-grade gold at Challenger West sharpens the focus on a low-risk, near-term production pathway, but pending assays and DFS outcomes will be decisive for project advancement.
Questions in the middle?
- Will pending assays from Challenger South-Southwest and Challenger 3 significantly alter resource estimates or mine design?
- How will the DFS balance the use of tailings and near-surface mineralisation against the deferred underground mining phase?
- What are the capital and operational cost implications of restarting the Central Gawler Mill based on the current resource profile?