Yale Samples 10M Averaging 1.94% Cu, 19.17% Zn, 0.93% Pb, 36.7 G/T Ag and 0.59 g/t Au at Carol (Business Wire) 26 February 2010 Last updated : 26 February 2010 BonTrade Read more: Yale Samples 10M Averaging 1.94% Cu, 19.17% Zn, 0.93% Pb, 36.7 G/T Ag and 0.59 g/t Au at Carol (Business Wire)