BHP's $48bn iron expansion – The Aus; CEOs plan carbon tax showdown – The Fin; States face $6bn hit to revenue – The Fin; WA considers reneging on COAG deal – The Fin; Dollar forces big fall in land prices – The West

BHP's $48bn iron expansion – The Aus; CEOs plan carbon tax showdown – The Fin; States face $6bn hit to revenue – The Fin; WA considers reneging on COAG deal – The Fin; Dollar forces big fall in land prices – The West