Guardian: Australians are routinely being told that hefty mining taxes would hinder the country’s largest exports of coal and iron ore. This concern about the competitiveness of the industry has been the basis of the Abbott government’s drive to abolish the mining tax. However, it is hard to reconcile this view (key player Gina Rinehart, for example, claimed that Australia was “too expensive to do export orientated business”) with news this week that mining giant BHP Billiton recently increased its profits…