Rumble Resources (ASX:RTR) upgraded the gold mineral resource estimate at the Western Queen project in Western Australia to 5.1 million tonnes at 2.6 grams per tonne grade of gold for a total of 433,600 ounces, according to a Wednesday filing with the Australian bourse.
The previous mineral resource estimate was 3.7 million tonnes at 3.1 g/t grade of gold for 370,000 ounces, a separate filing in July 2025 said.
The upgraded resources will be incorporated into an updated mining schedule, which will feed into the bankable feasibility study to be delivered in the September quarter, per the filing.
Shares rose 5% in morning trade on Wednesday.