Canada

Note: totals may not add up correctly due to rounding.

¹ WIM mineral reserves are estimated at a minimum net smelter return (“NSR”) cut-off of C$150 per tonne, assuming processing recoveries of 98% for copper, 88% for gold and 70% for silver, and using long-term prices of $3.10 per pound copper, $1,375 per ounce gold and $17.00 per ounce silver. 3 Zone mineral reserves are estimated at a minimum NSR cut-off of C$150 per tonne, assuming processing recoveries of 85% for gold, and using a long-term price of $1,375 per ounce gold.
² Mineral resources are exclusive of mineral reserves and do not have demonstrated economic viability. New Britannia mineral resource estimates have been reported at a minimum true width of 1.5 metres and with a cut-off grade varying from 2 grams per tonne (at the lower part of New Britannia) to 3.5 grams per tonne (at the upper part of New Britannia).

Note: totals may not add up correctly due to rounding.

¹ Mineral resources are exclusive of mineral reserves and do not have demonstrated economic viability. 1901 mineral resources are estimated at a minimum NSR cut-off of $170 per tonne, assuming processing recoveries of 73% for copper, 94% for zinc, 48% for gold and 47% for silver, and using long-term prices of $3.10 per pound copper, $1,260 per ounce gold, $1.10 per pound zinc and $18.00 per ounce silver. Watts mineral resources are estimated at a minimum NSR cut-off of $150 per tonne, assuming processing recoveries of 87% for copper, 80% for zinc, 65% for gold and 64% for silver, and using long-term prices of $3.10 per pound copper, $1,375 per ounce gold, $1.10 per pound zinc and $17.00 per ounce silver. Pen II mineral resources are estimated at a minimum NSR cut-off of $75 per tonne and assume that the Pen II mineral resources would be amenable to processing at the Stall mill.