• Seismic event at Xantho Extended orebody at Golden Grove mine
• No injuries reported
• Reinstating ground support to impact production levels
• Zinc production guidance withdrawn, alternate lower-grade ore sources to be mined

29Metals Limited (ASX: 29M) has announced a further seismic event within the Xantho Extended orebody at the company's Golden Grove mine site in Western Australia. Importantly, no injuries were reported. The time required to reinstate ground support to impacted Xantho Extended production levels to access high-grade zinc ore, previously planned for the December quarter, is currently being assessed. Accordingly, full year guidance for zinc production is withdrawn. Alternate ore sources, with lower zinc grades, will be mined whilst access to Xantho Extended is restricted. Production guidance for all other metals (copper, gold and silver) is maintained. An update will be provided in the September quarterly report, due to be released on 15 October 2025.