• Rio Tinto's underground operations at Oyu Tolgoi in Mongolia are paused pending a safety review following seismic activity.
• The event occurred along a rock fault zone at approximately 18:00 local time on October 29, causing underground ground vibration.
• Three employees sustained injuries. There were no fatalities.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Rio Tinto plc published the original content used to generate this news brief on October 30, 2026, and is solely responsible for the information contained therein.