The world's 'biggest' ever iron ore jackpot has been found - a stash that could be worth £4.5trillion and threatens to redraw the global economy. Geologists say they have discovered a rich deposit buried deep beneath Western Australia - an estimated 55 billion metric tons of ore with iron content topping 60%. Located in Pilbara’s remote Hamersley region, the deposit boasts iron levels so high that it can be dug up more efficiently than other mines and with less waste. Australia already