Driverless trucks move all iron ore at Rio Tinto's Pilbara mines, in world first
Mining giant Rio Tinto is running pits at its Yandicoogina and Nammuldi mine sites, with workers controlling the driverless trucks largely from an operations centre in Perth, 1,200 kilometres away.
Josh Bennett manages the mining operations at Yandicoogina mine north west of Newman and is closely involved with running 22 driverless trucks on the site. Mr Bennett said the two pits are the largest of their kind in the world.
"To the naked eye it looks like conventional mining methods. I guess the key change for us is the work that employees and our team members are doing now," he said. "What we have done is map out our entire mine and put that into a system and the system then works out how to manoeuvre the trucks through the mine."
The company is now operating 69 driverless trucks across its mines at Yandicoogina, Nammuldi and Hope Downs 4. The trucks can run 24 hours a day, 365 days a year, without a driver who needs bathroom or lunch breaks, which has industry insiders estimating each truck can save around 500
work hours a year.
Mr Bennett said the technology takes away dangerous jobs while also slashing operating costs. "We have taken away a very high risk role, where employees are exposed to fatigue," he said. "It is quite challenging to get repeatability out of a human, one of the advantages we have had with autonomous haulage particularly in the truck fleet we notice we are getting consistency in terms of the way the machines are operating.
"One of the biggest costs we have got it maintaining mobile assets, so we spend a lot of time on our operator training, education. "So, there is obvious capital savings, in terms of setting up camps, flying people to site, there is less people so there is less operating costs, but there are some costs that come into running the system and maintenance of the system as well."
Rio's plans do not stop at trucks. It is also trialling unmanned trains and mining with robot drills with the aim of rolling out the machines across as many of its mine sites as possible. Eventually most of the company's supply chain from the pit to the port will be remote controlled from Perth. Mr Bennett said that involves the creation of new, highly skilled positions."We have a whole dedicated team based in Perth that is looking at how to optimise the system, looking at
maintenance, productivity...those are jobs that did not exist five years ago," he said.
"We have got roles which are being created such as a central controller and a pit controller which are essential to running the autonomous system."