The majority of Fonterra's Edendale plant was back in operation and milk collections were back to normal, Fonterra chief operating officer global operations Robert Spurway said yesterday.
Fonterra had teams on site preparing to clear the damaged area and that work would continue over the next few weeks.
Investigations into the cause of the milk silo collapse on Friday were under way.
"Our Edendale D4 drier and milk protein concentrate plant may take some time to reinstate, but we have expert engineers working on a plan.''
Milk collections were now back to normal as Fonterra continued to balance milk across the South Island. Farmers would be contacted directly if there was any further impact to their collections, he said.