Activist investor Palliser Capital is stepping up a campaign to push Rio Tinto to abandon its primary London listing, urging the miner to allow Australian shareholders to vote on a resolution that calls for an independent review into its dual-listing status.

London-based hedge fund Palliser Capital on Monday urged Rio Tinto , to allow the company's Australian shareholders to vote on a resolution that seeks an independent review of its dual-listing status.

Rio Tinto is actively exploring the potential of biofuels as part of its ongoing efforts to achieve its Scope 1 and 2 emissions reduction targets.