Buenaventura Mining Co (NYSE:BVN) reported quarterly earnings of $0.55 per share which beat the analyst consensus estimate of $0.31 by 77.42 percent. This is a 129.17 percent increase over earnings of $0.24 per share from the same period last year. The company reported quarterly sales of $307.70 million which beat the analyst consensus estimate of $292.31 million by 5.27 percent. This is a 24.68 percent increase over sales of $246.80 million the same period last year.