Funds have been holding a net long position on the CME copper contract since the beginning of this year.

A resolution to the trade dispute may prompt buyers including China to rebuild their stockpiles, helping fuel the rebound in prices, Mining Minister Baldo Prokurica said.

The world’s top copper producer says four of its unions were victims of inflated policy prices.

A researcher has figured out what makes porphyry deposits rich in gold or in copper.