Revolver Resources (ASX:RRR) achieved a milestone in the scope of work for its Dianne copper mine project in Queensland as outlined in the AU$1.3 million grant from the Queensland government's Critical Minerals and Battery Technology Fund, according to a Thursday filing with the Australian bourse.

The company finalized the solvent extraction/electrowinning process front-end engineering design for the project in late 2024, meeting a milestone of agreed conditions, the filing said.

The remaining milestone for receipt of the grant is the completion of site engineering design, set to be finalized in the coming months, per the filing.

Shares fell nearly 6% in afternoon trade Thursday.