Iron ore exports at Port Hedland have increased by 30 per cent on this time last year as the big miners ramp up production.

Iron ore exports through Australia’s largest bulk commodity port totalled 36.7 million tonnes in January, up 30 per cent or 8.5 million tonnes, on the same month in 2014, figures from the Pilbara Ports Authority show. Mining giants BHP Billiton, Rio Tinto and Fortescue Metals Group are continuing to export…