Xstrata is deeply committed to the principles of sustainable development and our organization in Peru is no exception. Our Tintaya operation conduct comprehensive environmental monitoring and all community participatory and company monitoring activities to date have demonstrate that Tintaya operates in line with Peruvian law...Tintaya retains and recycles all process water on-site and we do not discharge into local water bodies. We do not produce or use mercury, arsenic or lead in our process. Upstream and downstream monitoring results show that water quality is consistent and there is not impact from our mining operations...With respect to the report commissioned by Vicaria de la Solidardid...the study did not find that Tintaya contaminated local land or water sources...[and] the study's methodology did not take into account the hydrogeological characteristics of the Salado River which...naturally contains heavy metals.