Mine automation and electrification are no longer pilot projects. Rio Tinto runs a fleet of more than 300 autonomous haul trucks across the Pilbara; BHP's Escondida Norte has deployed 33 autonomous haul trucks and 11 autonomous drill rigs; Anglo American's Quellaveco is managed from a remote operations centre running 30 automated (tele-operated) mining trucks; Fortescue has signed a US$2.8 billion green equipment partnership covering 475 units, of which roughly 360 are battery-electric, autonomy-ready haul trucks. The hundreds of autonomous trucks already in service at Rio Tinto, BHP and Anglo are still overwhelmingly diesel-powered. A serious battery-electric order of this size has so far been placed only by Fortescue (around 360 T 264 units). Battery-electric haul trucks globally remain in single-digit trial deployments at Rio Tinto and BHP. Note that Rio Tinto's AutoHaul is an autonomous train system, not a mine-truck AHS. These deployments show that the major miners have moved the technology from trial into core production. The reason they are willing to spend is not just to chase the "smart mine" label. New mines are getting more expensive and slower to deliver. Lifting the uptime, haulage efficiency and safety of existing assets is faster and more controllable than waiting for greenfield supply. I. Why are miners willing to invest? 1. Lower grade means more ore must be moved to deliver the same metal tonnage IEA data show that the global average copper ore grade has fallen 40% from 1991, and that capital intensity for brownfield expansions has risen 65% since 2020. If grade halves, producing the same metal tonnage as before requires moving twice as much ore — the workload at every stage of mining, hauling and concentration doubles. The lower the grade, the more valuable equipment efficiency becomes, and the more cost-effective automation is. 2. Major miners have