"Also, another big factor to consider is the cost of fuel in an open pit style mining operation. If I'm not mistaken, this accounts for something like 25 - 30% of operating costs. Since the FS, oil and fuel costs have gone down close to 25%. This would roughly reduce operating costs about $0.10 per lb of Cu mined. This would increase NPV hugely"

other arguements to be made here, our cost to produce is around $1.15 per pound of copper If a 25% reduction in fuel creates a $.10 reduction of cost to produce It doesn't make sense where in the FS does it state $.40 per pound goes to fuel that's like 35% total operating costs or Is it .40 goes for transportation which includes Wages number 1 vehicle costs #2 Insurance on those vehicles and all other relative costs. I have limited experience in this as my father owned a transport company with 40 plus trucks in the 90's