Northern Dynasty said on Wednesday that Wardrop completed a positive
preliminary assessment report for the Pebble copper-gold-molybdenum project in Southwestern Alaska.
"For the Pebble Project, the 45-year Reference Case yields a 14.2% pre-tax IRR, a 6.2-year payback on initial capital investment of $4.7 billion and a $6.1 billion pre-tax NPV at a 7% discount rate and long-term metal prices. At current prevailing metal prices, the 45-year Reference Case yields a 23.2% pre-tax IRR, a 3.2-year payback on initial capital investment and a $15.7 billion pre-tax NPV at a 7% discount rate."