Great Boulder Resources (ASX:GBR) has upgraded its resource estimate of the Side Well Gold Project near Meekatharra in Western Australia to 16 million tonnes @ 2 grams per tonne gold for 1.02 million ounces.
The company reports that 61% of ounces fall in the indicated category, while 90% of the total ounces are prospective for open pit mining.
The Mulga Bill deposit has increased to 642,000 ounces @ 2.4g/t, with 77% falling into the indicated category, with a grade component of 441,000 ounces @ 5.3g/t.
Great Boulder will have three rigs restarting drilling in January 2026, while also lodging mining lease applications at Mulga Bill, Eaglehawk, Flagpole, and Golden Bracelet in the new year.
Managing Director Andrew Paterson says the company recognised the project’s potential for multi-million ounces when drilling first began.
“We are very pleased to deliver on the first 1 million ounce milestone as we continue to aggressively drill and deliver further resource growth and additional discoveries,” Paterson says.
“Recent results have highlighted immediate upside to the resource; for example the recent visuals from deep holes (200m below previous drilling) at Mulga Bill highlight the enormous potential of that system.
“Meanwhile, we’ve only completed a small amount of drilling at Flagpole and Golden Bracelet, both of which remain open along strike and at depth, and Eaglehawk is only just emerging.
“Our systematic exploration highlights the massive potential for the Side Well Project, indicating strong resource growth into 2026 and beyond.”
Great Boulder Resources is a mineral exploration company with gold and base metals assets in Western Australia.
Write to Maddison Elliott at Mining.com.au
Images: Great Boulder Resources
