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    Barton high-grade gold at Tunkillia: pit design and economics lens for engineers

    July 7, 2026|

    Reviewed by Joe Ashwell

    Barton high-grade gold at Tunkillia: pit design and economics lens for engineers

    First reported on Australian Mining

    30 Second Briefing

    Barton Gold has reported some of its highest-grade assays to date from drilling at the southern end of Area 223 within the optimised open-pit shell at its Tunkillia gold project in South Australia. The infill and step-out drilling is targeted inside the current pit design to support a mineral resource upgrade and refine open-pit economics. Results from Area 223, Tunkillia’s main deposit, will directly influence pit shell geometry, strip ratios and scheduling for any future development studies.

    Technical Brief

    • Drilling is focused on the southern sector of Area 223, indicating potential extension of higher-grade shoots.

    Our Take

    The recent start of a pre-feasibility study at the Tunkillia gold project with GR Engineering Services (24 June 2026 item) means these new high-grade results at Area 223 are likely to feed directly into mine design and scheduling assumptions rather than just resource expansion headlines.

    Barton Gold’s parallel high-grade drilling success at the Challenger project in South Australia (21 April 2026 item) suggests the company is building a multi-asset gold pipeline in the state, which can improve optionality for sequencing capital and processing infrastructure between Tunkillia and other deposits.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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