'Thousands' of jobs in doubt as CBA prepares to snatch BankWest; Merger to create $10bn bonus: BHP; Iron ore producers steel themselves for a slide; $500m windfall in $A plunge; Mitsui walks from Crux project

'Thousands' of jobs in doubt as CBA prepares to snatch BankWest; Merger to create $10bn bonus: BHP; Iron ore producers steel themselves for a slide; $500m windfall in $A plunge; Mitsui walks from Crux project