Rio Tinto has announced it will expand its autonomous haul truck fleet to a fifth site in the Pilbara, with the iron ore miner set to add 15 driverless trucks at the West Angelas mine in May.

Rio Tinto has announced it will expand its autonomous haul truck fleet to a fifth site in the Pilbara, with the iron ore miner set to add 15 driverless trucks at the West Angelas mine in May.