Barrick Gold's two most productive gold mines are Cortez and Goldstrike in Nevada, USA. Table 4.7 reports the selling prices and costs for the two mines. The "average cash cost" includes operating cost, royalties, and taxes, while the "average cost" includes the cash cost as well as amortization.

Table 4.7 Barrick Gold Cortez Goldstrike 2010 2011 2012 2010 2011 2012 Production 1,141 1,421 1,370 1,239 1,088 1.174 (thousand ounces) Selling price ($ per 1,228 1,578 1,669 1,228 1.578 1,669 ounce) Average cash cost 244 245 282 475 511 541 ($ per ounce) Average cost ($ per 452 426 503 569 593 629 ounce) Source: Barrick Gold Corporation, year-end reports and year-end mine statistics