Kamoa Kakula copper mine disruption likely caused by overmining says Ivanhoe
Seismic activity that recently disrupted production at the massive Kamoa-Kakula copper mine in the Democratic Republic of Congo appears to have been self-induced, according to preliminary findings released by the mine’s operator, Ivanhoe Mines Ltd.
The incident, which occurred last month and resulted in flooding in parts of the mine, originated in an area where a significant portion of the ore had already been extracted, the company revealed in a filing on Wednesday.
“Current thinking postulates that blocks of ore, earmarked for secondary extraction, began to collapse in a cascading fashion, which triggered stress redistribution onto surrounding regional pillars,” according to Ivanhoe’s initial geotechnical assessment.
This setback has raised questions about the long-term trajectory of Kamoa-Kakula—a project previously hailed for being both ahead of schedule and within budget.
The mine had rapidly emerged as one of the world’s top new copper producers, positioning the DRC as a leading source of this critical metal used in electric vehicles, renewable energy, and modern infrastructure.
Despite the disruption, Ivanhoe Mines’ co-chairman Robert Friedland struck an optimistic tone on Thursday, calling the event a “bump in the road.” However, should further studies confirm the seismic disturbance was caused by excessive extraction, the company may be forced to revise its development strategy.
A note from Bank of Nova Scotia analyst Orest Wowkodaw echoed these concerns, stating the initial findings suggest a “likely reduction” in total reserves across the Kamoa-Kakula deposits. This would imply reduced mining rates and increased operational costs moving forward.
“The seismic activity appears to have been induced by the mining process itself,” the note said. “We don’t think Kakula is lost by any account.
Still, a new operating plan is likely to be based on lower mining rates, reduced reserves, and higher costs—though the project remains economically viable due to its high-grade ore.”
Ivanhoe is expected to release a more comprehensive update once further investigations are complete.
