The 344km single-track line is expected to carry 55mtpa of processed iron-ore from the mine to a dedicated port facility located south of Port Hedland. The Roy Hill railway plans to run five trains per day, each formed of three locomotives and 232 wagons and with a payload of 31,450 tonnes of ore.

Construction is expected to begin next month and John Holland says it expects the project workforce to reach 270 people at the height of construction.