Three years ago, a Newmont Mining Co. truck spilled almost 300 pounds of mercury at Yanacocha, Latin America's largest gold mine, located just north of Cajamarca, Peru. Last year, the Environmental Protection Agency listed the company as one of five top chemical polluters in the United States. Now the Colorado-based mining firm is sponsoring the Denver Museum of Nature & Science's new exhibit on Machu Picchu, the ancient city of the Incas in the... More >>>