Peru: Deadly demonstrations and shareholder activism After the water study, Yanacocha spent hundreds of millions of dollars updating a water treatment plant and devising a new method to capture and filter runoff from the mine, Velarde, the Yanacocha spokesman, said. Yanacocha Q1 output, costs up - BNamericas Yanacocha, South America's largest gold mine, registered higher cash costs than planned in Q1 but they are expected to come down by year-end, an executive at Peruvian precious metals miner ... Gold Rush - The Investigative Fund After the water study, Yanacocha spent hundreds of millions of dollars updating a water treatment plant and devising a new method to capture and filter runoff from the mine, Velarde, the Yanacocha spokesman, said.    Read More