Scoping Study Considers Choco 10 Expansion
The scoping study outlines an expanded Choco 10 complex that would produce an average of 545,500 oz/y of gold from 7.3 million mt/y of ore at an average grade of 2.58 g/mt gold during its first three years of operation. Open-pit mining would be by a contractor. Mine life is estimated at more than 12 years. Maximum annual production is forecast at 717,300 oz in year 10 of operation.
The new processing facility would have a conventional flowsheet similar to the existing plant, with primary crushing, twostage milling, cyanide leaching, carbon adsorption and elution, electro-winning and gold smelting. Gold recovery is forecast to average 90%.
Life-of-mine cash costs are estimated at $331/oz. Expansion capital requirements are estimated at $208.5 million plus contingencies of $30.8 million and sustaining capital of $80.3 million over the life of the mine.