Long term copper and gold prices used in FSs are virtually unchanged by recent gyrations.  Do you know what has really dropped over the last few days and weeks?  It is crude prices.  Do you know what percentage of opex that petrol is at Schaft Creek?  it's over 30%.  Oil is trading at less than half the price used in the FS.  That is a huge cost savings that no one is talking about in the economics of the project.

Maybe the economic improvements are simply TOO GOOD for Teck to admit to and alllow out for all to see.  It would expose the idiocy of them funding Fort Hills, Frontier and QB2 over a clearly much-more-profitable and much-lower-risk Copper/Gold mine at the Schaft Creek mining district.