Rio Tinto restarts Oyu Tolgoi underground operations after Mongolia seismic disruption
After a temporary halt at one of its key copper assets, Rio Tinto says underground activity is beginning to resume at the Oyu Tolgoi mine in Mongolia. The restart follows safety reviews after a seismic event, while transport constraints at the China-Mongolia border continue to weigh on copper concentrate shipments.
Highlights
- Rio Tinto has progressively restarted underground operations at Oyu Tolgoi following a safety review after the October 29 seismic event.
- The seismic incident caused a localized rockfall but no structural damage; three employees sustained non-life-threatening injuries, with no fatalities reported.
- Delays at the Ganqimaodu border crossing between China and Mongolia have reduced truck availability for Oyu Tolgoi copper concentrate transport, creating additional logistics pressure.
Safety review clears phased mine restart
As reported by Reuters, Rio Tinto says it has begun progressively restarting underground operations at Oyu Tolgoi after completing safety checks following the October 29 seismic event.The company says the event triggered a localized rockfall in a temporary storage area next to the production zone, causing ground vibrations but no structural damage to the underground cave or operating infrastructure.
Rio Tinto says three employees sustained injuries and that no fatalities were reported. Two workers continue to receive treatment for injuries that are not considered life-threatening.
Copper growth plans face logistics pressure
Oyu Tolgoi is one of the world's largest known copper and gold deposits and remains central to Rio Tinto's copper growth strategy. Rio Tinto owns 66% of the project, while the Mongolian government holds the remaining stake.The miner also says delays affecting all vehicles moving through the Ganqimaodu border crossing between China and Mongolia have reduced the availability of trucks used to transport copper concentrate from Oyu Tolgoi. The disruption adds a logistics challenge alongside the operational recovery at the mine.
In our earlier coverage of global trade disruptions, we examined how geopolitical conflicts and tariffs are reshaping shipping routes and supply chains beyond short-term wartime adjustments. We noted that businesses are increasingly adopting costlier but more resilient logistics alternatives and contingency plans, with some shifts likely to persist even as conflicts ease.
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