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In this May 29, 2012 photo, people arrive for a day of work to collect recyclable materials at Jardim Gramacho, one of the world's largest open-air landfills, in Rio de Janeiro, Brazil. Jardim Gramacho, a vast, seaside mountain of trash where thousands of people made a living sorting through the debris by hand, is closing after three decades in service. (AP Photo/Victor R. Caivano)

Associated Press
In this May 29, 2012 photo, people arrive for a day of work to collect recyclable materials at Jardim Gramacho, one of the world's largest open-air landfills, in Rio de Janeiro, Brazil. Jardim Gramacho, a vast, seaside mountain of trash where thousands of people made a living sorting through the debris by hand, is closing after three decades in service. (AP Photo/Victor R. Caivano)
In this May 29, 2012 photo, people arrive for a day of work to collect recyclable materials at Jardim Gramacho, one of the world's largest open-air landfills, in Rio de Janeiro, Brazil. Jardim Gramacho, a vast, seaside mountain of trash where thousands of people made a living sorting through the debris by hand, is closing after three decades in service. (AP Photo/Victor R. Caivano)
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