"May I remind you that Voisey's Bay has an average grade of only 1.6%."

So right, it is a mute topic to persue.

Only if the concentration is below one percent that it becomes uneconomical AND only IF it is a pure nickel mine at recently low nickel prices.

With other metals ( more expensive if in lower amounts ) are present then you have added dollars per ton. We have plenty at Eagle 1, copper and palladium being prime, remainder I can not say because I have no matelurgical processing know how.