I stated exactly where the numbers came from. The economic model in the FS is done in CDN. Then they calculate the impacts of changing metal prices and exchange rate. Most commodities are priced in USD but all of our costs are CDN. So two outcomes have to happen, one is lower NPV if metal prices drop and secondly a higher NPV will occur if the value of the CDN drops against the USD for a commodity priced in USD. The graph below from the FS shows how to estimate the NPV changes. When Elmer states there's a $ 75 million CDN increase for every % drop in the value of the CDN against the USD he is using this graph. He has mentioned that the metal prices need to be considered but hasn't ever given a number. That's because they certainly don't improve NPV when metal prices(in USD) drop or he would use it. I don't see how your approach agrees with the model below that was generated by experts. Right now I get about 30 cents per share from NPV and that comes in at the low range (30-50 cents per share) I get from other project sales. What do you think is preventing Elmer from selling the SC asset? There's nothing to be gained from waiting any more regardless of whose valuation is correct.