The Yanacocha Tour group in the composite Yanacocha pit. From left: Mike Porter (Porter GeoConsultancy, Australia); Jakson Vilchez (Minera Yanacocha/Newmont, Peru); Song Zhang (Rio Tinto Minerals Exploration, China); Suziany Rocha de Souza (Rio Tinto Exploration, USA); David Burrows (Vale, Canada); Edgar Davila (Vale Exploraciones, Peru); Atsuhiro Kuroda (Sumitomo, Japan); and Luis Portugal (Vale Exploraciones, Peru).       Image by Mike Porter.