ATLANTA - The 11th Circuit U.S. Court of Appeals on Dec. 18 affirmed a decision requiring an expert to produce certain documents for use in foreign proceedings, finding that the materials did not contain any core opinion work product of Chevron Corp.'s attorneys (Republic of Ecuador, et al. v. Chevron Corp., No. 12-16216, 11th Cir.; 2013 U.S. App. LEXIS 25102).