Left to right, Ecuadorans Guillermo Grefa and Humberto Piaguaje stand with their legal team Steven Donziger and Pablo Fajardo before a news conference in San Francisco, Calif. on Tuesday, April 24, 2007. The group will press their issue to Chevron shareholders this week bringing to light their accusations that Texaco, acquired by Chevron a fews years back, contaminated an Amazon rain forest region several decades ago. Photo: Paul Chinn, The Chronicle
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