Iron ore giant Fortescue Metals Group has been told by government regulators to amend the price scheme it had originally planned to apply to usage of its Pilbara railway network by a rival miner.

The West Australian Economic Regulation Authority (ERA) has announced that the total costs Fortescue would be able to apply to its railway line for usage by iron ore miner Brockman Mining would be in the range of $84.7 million to $316.9 million. Fortescue had originally hoped to charge Brockman Mining…