
Anglo-Australian mining giant Rio Tinto has made another increased bid for Riversdale Mining in an effort to convince shareholders to accept its acquisition proposal.
The new bid values the Australian owned coal miner at $4 billion. Rio first offered $3.5 billion last December, before improving the offer slightly later the same month.
The new bid represents an increase from $16 a share to $16.50, but Rio wants more than 50 per cent of shareholders to accept the bid by 23 March.