Buenaventura Mining Co (NYSE:BVN) reported quarterly earnings of $0.36 per share which beat the analyst consensus estimate of $0.32 by 12.5 percent. This is a 28.57 percent increase over earnings of $0.28 per share from the same period last year. The company reported quarterly sales of $369.500 million which beat the analyst consensus estimate of $295.034 million by 25.24 percent. This is a 33.35 percent increase over sales of $277.100 million the same period last year.