Against our rock bottom C1 cost, the profit numbers get really wild when CU prices get to these levels.  Imagine Cu at $6 or $9...
Our 25% of that annual profit w/b US $300,000,000 per year.  Apply a 15 multiple to those earnings and you get an estimated market cap value for our 25% ownership in the US $4,500,000,000 range.  Discount that at 8% for ten years because we won't be getting the full payout until then and you have a new reference point for what our 25% can be worth today.  Present value (8% over 10 years) of $4,5000,000 =  $2,084,000,000 US or $2,630,000,000 CAD or about $4.38 CAD per CUU share (using 600M shares).

Then don't forget to add the value of the mining district potential where economies of scale would further blow up the profit numbers.