A miner naps near his workstation in La Pampa in Peru's Madre de Dios region. Thousands of artisanal gold miners sweat through the 28-hour shifts and endure, for a few grams of gold, the perils of collapsing earth, limb-crushing machinery and the toxic mercury used to bind gold flecks. They chew coca leaf, a mild stimulant, to ward off the fatigue that can lead to fatal accidents. (Photo by Rodrigo Abd/AP Photo)
