Rio declares force majeure on Boyne aluminium

The Canadian miner has reportedly engaged law firm Thomson Geer to finalize a prospectus for listing in the ASX before Christmas.

The three executives, including CEO Terry Holohan, were freed from detention on Wednesday.

The Australian Council of Superannuation Investors wants to clarify what directors knew about the company's investment in property that was part-owned by Chris Ellison.

The meeting has been pushed to February to allow time for the Australian government to review a potential breach by a shareholder of foreign acquisition laws.