"We have no assurance that this project will ever get built. That is by far the greatest risk with this invesment."

That would be true IF CUU management made a decission to take this to that stage (i.e., mine), but as far as I know they still want to sell. So the greatest risk in short term would be lack of interest for our 25% by another entity. If the metal market bounces this risk will surely decrease.