The greatly expanded deposit at Western Copper and Gold Corp.'s Casino project in the Yukon would support an economically robust mine capable of producing an average of 178 million pounds of copper, 231,000 ounces of gold, 1.36 million oz of silver, and 16.6 million lb of molybdenum per year over an initial 25-year mine life.

This is according to a preliminary economic assessment released on Ju...