Nyrstar has been hit by a cyber-attack affecting the Port Pirie site’s emails and information technology systems.
The company said that on Tuesday some systems, including email, were “down” at its headquarters in Zurich, Switzerland, and globally at the metals processing and mining operations.
“The cyber-attack issue has been contained and the company is working on a technical recovery plan with key information technology partners and global cyber security agencies,” it said.
“Some of the information technology systems, including email correspondence, have been shut to help contain the issue.
“The metals processing and mining operations are not operationally impacted. The company has taken precautionary measures to ensure continued operations of its sites.
“The company is assessing and managing the cyber-attack issue to minimise the impact on its operations, customers and key stakeholders from the situation.
“Business continuity plans are being introduced.
“The company will provide more information regarding the resolution of the cyber-attack in due course.”
It is believed that the disruption could last up to a week.
Nyrstar is a global multi-metals business with a market-leading position in zinc and lead, and growing positions in other base and precious metals which are essential resources that are fuelling the rapid urbanisation and industrialisation of the world.
It has mining, smelting and other operations in Europe, the Americas and Australia and employs about 4100 people.