Market Chatter: Rio Tinto Suspends Underground Operations of Oyu Tolgoi Copper Mine After Rockfall

02:34 PM EDT, 10/29/2026 (MT Newswires) -- Rio Tinto (RIO) has suspended the underground operation of the Oyu Tolgoi copper mine in Mongolia after a rockfall triggered by a seismic event led to 15 workers being injured, Bloomberg reported Thursday, citing an emailed statement from the company. Rio Tinto didn't immediately reply to a request for comment from MT Newswires. (Market Chatter news is derived from conversations with market professionals globally. This information is believed to be from reliable sources but may include rumor and speculation. Accuracy is not guaranteed.) Price: 82.32, Change: -3.62, Percent Change: -4.21