(a) The portion attributable to Chirano non-controlling interest represents the non-controlling interest (10%) in the production cost of sales for the Chirano mine. (b) (c) “Attributable silver revenues” represents the attributable portion of metal sales realized from the production of the secondary or by-product metal (i.e. silver). Revenue from the sale of silver, which is produced as a by-product of the process used to produce gold, effectively reduces the cost of gold production. (d) “General and administrative” expenses is as reported on the consolidated statement of operations, net of certain restructuring expenses. General and administrative expenses are considered sustaining costs as they are required to be absorbed on a continuing basis for the effective operation and governance of the Company.