Buenaventura Mining Co (NYSE:BVN) reported quarterly earnings of $1.32 per share which beat the analyst consensus estimate of $1.14 by 15.79 percent. This is a 140 percent increase over earnings of $0.55 per share from the same period last year. The company reported quarterly sales of $624.600 million which missed the analyst consensus estimate of $629.612 million by 0.80 percent. This is a 102.99 percent increase over sales of $307.700 million the same period last year.