What is the relationship between Codelco and copper in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Chile's state mining giant Codelco -- the world's top copper producer -- called off operations at one of its largest facilities Sunday due to a major storm that has killed at least five people.

Answer: product_or_material_produced