Three of the world's largest mining and metals companies have direct or indirect interests in the Pebble Project.
In addition to
Anglo American's 50% interest in the Pebble Project and the Pebble Partnership,
Rio Tinto plc and Mitsubishi Corporation have taken significant share positions in Northern Dynasty Minerals Ltd.
Rio Tinto plc has invested US$200 million to acquire 19.8% of Northern Dynasty shares, and Mitsubishi Corporation has reported they have acquired an 11% share position.