The refinery has a rare earth oxide production capacity of 3,000 tonnes per year.
The 7,000-hectare Birch project is one of the company’s 17 properties across 42,500 hectares in Canada's Yukon Territory.
The $2.7 billion capex project contains 4.2 billion lb. copper, 74.6 million lb. of molybdenum and 15.5 million oz. of silver.
For the year, K92 produced 149,515 ounces of gold, surpassing guidance.
