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Rio Tinto to deploy world’s first fully autonomous water trucks at Gudai-Darri iron ore mine

Rio Tinto will deploy the world’s first fully autonomous water trucks at its $2.6-billion Gudai-Darri iron ore mine in Western Australia’s Pilbara region. The new vehicles, primarily used for dust suppression on site, will enhance productivity by enabling mine operations to track water consumption digitally and reduce waste.


Rio Tinto will fully autonomous water trucks at the Gudai-Darri iron ore mine in the Pilbara. Credit: Rio Tinto/Rio Tinto

Developed through a successful collaboration with Caterpillar, three water trucks will join Gudai-Darri’s fleet of Caterpillar heavy mobile equipment including autonomous haul trucks and production drills. The vehicle’s intelligent on-board system detects dry and dusty conditions on site, triggering the application of water to roads to keep them in good condition.

The refilling process is also completely automated with the water trucks recognizing when it is time to refill, prompting them to self-drive to the water stand, park and top-up before returning to the field. They feature a 160,000-liter tank capacity, a 33% increase on Rio Tinto’s largest water truck which has a tank capacity of 120,000-liters.

Once deployed, the water trucks will be integrated into Rio Tinto’s existing Autonomous Haulage System which has been shown to significantly improve safety by reducing the risks associated with operators working around heavy machinery.

We have worked closely with Caterpillar to safely and successfully deploy the world’s first fully autonomous water truck. Water spraying is a vital part of mining operations and this new technology will improve productivity and reduce water usage across our operations. The continued expansion of our autonomous fleet helps improve safety and continues Rio Tinto’s efforts to adopt world-leading technology to enhance our operations and realise our vision of making Gudai-Darri one of the world’s most technologically advanced mines.

—Rio Tinto Iron Ore chief executive Simon Trott

Gudai-Darri is 100% owned by Rio Tinto, is located approximately 35 kilometers north-west of Rio Tinto’s Yandicoogina mine site, and about 110 kilometers from the town of Newman in the Pilbara region of Western Australia.


Construction continues to progress with production ramp-up on track for early 2022. Once complete, the mine will have an annual capacity of 43 million tonnes, underpinning production of the Pilbara Blend, Rio Tinto’s flagship iron ore product.


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