Tunkillia optimised scoping study - progress update

Comminution analyses indicate significant processing efficiency gains highlights july 2024 initial scoping study (iss) validated efficiencies of scale, with a 5mtpa producing ~130,000oz gold per annum at a competitive all-in-sustaining-cost (aisc) of a$1,917/oz au[1] optimised scoping study (oss) commenced november 2024, with key objectives to reduce power consumption, improve economics, and de-risk project working capital requirements[2] other oss work programs underway include updated jorc mineral resources estimate (mre) block modelling, comminution testwork and scenario analyses, capex and opex optimisation, preliminary power options analyses, and open pit mine design and scheduling opportunities comminution testwork and scenario analyses now complete, with meaningful efficiency gains indicated; other programs remain underway, with oss to be completed before 30 june 2025 [1] refer to asx announcement dated 16 july 2024 [2] refer to asx announcements dated 19 november and 12 december 2024 adelaide, au / access newswire / february 23, 2025 / barton gold holdings limited (asx:bgd)(fra:bgd3)(otcqb:bgdff) (barton or company) is pleased to provide a progress update for ongoing studies at its south australian tunkillia gold project (tunkillia). following the iss publication during july 2024, barton engaged independent technical consultants to complete a detailed review of optimisation opportunities in parallel with barton's own internal analyses.1 these parallel analyses identified high-priority opportunities relating to (amongst others) comminution circuit design, variable grind sizing, power consumption, mill throughput planning and mine scheduling.
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