Mining major Anglo American has accelerated its portfolio planning in the wake of rejecting fellow mining major BHP’s second bid proposal of $42.2-billion (£34-billion), or £27.70 a share, in a move that new research by consulting firm Wood Mackenzie (WoodMac) shows will take it from being the most diversified to the most concentrated major miner in the world. The report titled ‘Anglo American to rationalise all but copper and iron-ore production’ states that the company’s decision to take a strategic focus on the highest return commodities of copper and iron-ore mirrors similar moves by BHP and diversified miner Rio Tinto in looking to future-proof the business.