Afraid so.
Cobalt has dropped from its April 11th 2011 price of US$21.5/lb at 1.07 = AUD20.09 to US$13.24 @ 0.87 = AUD15.22, a drop of 24.2%.
Without knowing what the % of Co is in the concentrate we can't work out how much the current margin would be. It could well be uneconomic at these prices.