(FILES) Handout picture released by Agencia O Globo showing a supply boat working around an oil spill at the Frade field, located in the Atlantic Ocean some 370 Km northeast of Rio de Janeiro, on November 18, 2011. Rio de Janeiro's public prosecutor's office on March 21, 2012 took before justice U.S. oil giant Chevron and 17 people, among them its president in Brazil, for
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