I've been wondering this, until I just read Freeport sold their 56% stake in the Tenke Fungurume copper and cobalt mine there.
So 56% of a 225ktpa copper and 16ktpa cobalt operation was worth 2.65 billion dollars this week.
At that rate Tigers 95% of Kipoi's 32.5kpta and TBA Cobalt would be worth about 385 million dollars.
US Dollars.
Hmmm.
http://www.fcx.com/operations/AfricaTenke.htm