The EPA’s action is a significant boost for Northern Dynasty Minerals and Pebble LP supporters, who have called on the EPA to lift the Clean Water Act restrictions.
Antofagasta says the extension would give it time to consider a proposal from neighboring Escondida to share information on the availability of water beneath the flat.
The Chinese miner has received the necessary internal approvals for its subsidiary CITIC Metal Africa to complete its second investment in Ivanhoe Mines.
Global copper mine production will see steady growth over the next few years, supported by markets with low operating costs and improving copper prices.