A tunnel wall collapsed at Pogo Mine on Wednesday but no injuries were reported. The large underground gold mine is located about 30 miles north of Delta Junction.

"Pogo Mine experienced a surface ground wall failure that restricted access to one of the underground access portals on Aug. 21, 2019," Pogo spokeswoman Wendie MacNaughton said in a statement sent Thursday to the Daily News-Miner. "There were no injuries as a result of the incident."

MacNaughton noted that regulatory agencies have been notified and that the mining company is investigating why the wall collapsed.

Interior Alaska has seen extreme rainfall recently with rivers throughout the region reaching bank full or near flooding levels over the past two weeks. MacNaughton said there is not an official link between recent levels of rainfall and the wall failure but that "seasonal factors contributed, including surface water effects."

Pogo Mine was bought by Australian-based Northern Star Resources Ltd. last year. The company paid approximately $260 million for sole ownership of the mine, formerly controlled by Japanese-based Sumitomo Metal Mining Co. and Sumitomo Corp.

The mineral store was discovered in 1995 and the mine was opened in 2006.

Contact staff writer Erin McGroarty at 459-7544. Follow her on Twitter: @FDNMpolitics.