Rumble Resources (ASX:RTR) submitted the notification of commencement of operations as it advances works at the proposed underground mine development within its Western Queen project in Western Australia, according to a Tuesday filing with the Australian bourse.

Work is ongoing to update the November 2025 scoping study, which is slated for release within the month, the filing said.

Additionally, the feasibility study is expected to be completed in the December quarter, pending positive results from the updated scoping study and acceptable indicative financing terms, per the filing.

Shares fell 6% in afternoon trade Tuesday.