What is the relationship between Escondida mine 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.

Copper will fall by 12 per cent to 1.5 million tonnes essentially because the long-dated reconfiguration of BHP's Escondida mine in Chile will not start driving higher grades until FY17.

Answer: product_or_material_produced