A feasibility study has confirmed that the Frieda River copper-gold joint venture in north-western East Sepik province is the country’s largest undeveloped open pit project, and among Asia-Pacific’s tier 1 copper-gold sites. The study outlines the project will require an estimated initial capital investment of US$5.6 billion, for a 20-year open pit mine life capable of annually producing an average 304,000 tonnes of copper and 451,000 ounces of gold in its first five years. 