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A sign on the edge of the open-pit mine reads in Spanish "Explosion schedule - Mornings:11 a.m., Afternoons: 3 p.m." in the mining town of Cerro de Pasco, Peru, Tuesday, Sept. 15, 2009. Peru's congress passed a bill in 2008 to condemn and relocate Cerro de Pasco, based on U.S. Centers for Disease Control studies that found soil, homes and water saturated with toxic levels of lead. Nine of 10 children have elevated blood levels of one of 14 heavy metals, including lead, cadmium, and arsenic, according to the CDC. (AP Photo/Martin Mejia)