Members of the "Mina" union halted activities on October 8 after the talks collapsed. The two parties have since made little progress on a new deal.

The company said the union had received the offer and must vote on it by November 4. The union did not respond to requests for comment.

Candelaria said in a statement it was willing "to resume dialogue in an environment of mutual respect and good faith."

The company did not refer to the status of talks with another of its workers groups, the Candelaria Union, which also went on strike on October 20.

The company did, however, note that its operations continued to be hampered by road blockades by striking workers. The company was forced to suspend its operations on October 20 after negotiations on a new collective contract with the second union faltered.

Candelaria produced 111,400 t of copper in 2019.