Great Boulder Resources Limited Great Boulder Resources Limited (ASX:GBR) operates as a mineral exploration company focused on gold and base metals in Western Australia. The company holds a portfolio of high-quality projects including the flagship Side Well Gold Project near Meekatharra in the Murchison region, which features the Mulga Bill deposit with million-ounce potential and recent high-grade intersections such as 105m at Eaglehawk and extensive results at Ironbark; the Whiteheads project straddling the Kalgoorlie and Kurnalpi terranes for gold and nickel sulphides; and the Wellington project in the Earaheedy Basin targeting large-scale zinc-lead mineralization. Incorporated in 2016 and headquartered at Level 1, 51 Colin Street, West Perth, Australia, Great Boulder Resources employs advanced geochemical, geophysical, and mineral systems techniques in its operations, which are confined to Australia with a single mineral exploration segment.
Recent developments include a transformative A$12.5 million placement in June 2025 at A$0.061 per share to accelerate drilling at Side Well's Ironbark, Side Well South, and Saltbush prospects, fund resource definition, geophysical surveys, and mining approval studies, boosting cash reserves to approximately A$15 million; the release of an Ironbark Scoping Study in July 2025 marking a key milestone toward potential early mining; and ongoing discoveries such as significant chargeability anomalies over 3km at Side Well and high-grade gold at Mulga Bill ahead of a resource update.