Congo's State mining group said it will push to secure the rights to buy copper and cobalt at mines it has holdings in.

Jorge Rivera has been named the replacement.

The five people had been charged in connection with the theft of about 5,000 kilograms of materials containing precious metals.

The court found that Greenpeace had a right to stage the demonstration, but could not stay aboard the Coco indefinitely.

The expectation for a looser market in the near term has been reflected in copper prices.

"The much bigger question is rebooting confidence," said a senior executive at an LME member broker.

The company is facing an estimated $625 million in debt maturities next year and another $1.8 billion in 2025.

The Kingdom has been studying setting up the trading platform for the past three months and it does not expect a decision to be made before the next six.