Endesa Chile...and Colbun are proposing a joint, US$4 billion project to build four dams on the Baker and Pascua rivers...the dams look to become the next major environmental battle in one of Latin America's healthiest and most modern countries...Environmental impact studies will not be complete until next year...but Endesa is already working to win over locals and environmentalists. [also refers to Copec, Barrick Gold]