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Trrucks carry coal from a pit in Cerrejon, Colombia, the world's biggest open-pit export coal mine, in the Guajira peninsula in northern Colombia, Tuesday, May 24, 2005. All the coal produced at Cerrejon, is shipped by train to a seaport, where it is loaded onto freighters bound for Europe and America. The vigilance accorded the shipments from the gigantic Cerrejon mine underscores coal's importance in this South American nation's economy. Colombian coal exports are booming, netting some US$1.7 billion (1.4 billion) in revenues in 2004. Colombia is now the world's fifth largest coal exporter, after Australia, China, Indonesia and South Africa. (KEYSTONE/AP Photo/Ricardo Mazalan)