Proposed site of Pacific Rim’s El Dorado mine.In a truly David and Goliath battle, the people of El Salvador are fighting against a Canadian mining giant that was lawfully denied permits for a gold and silver mine that would devastate the local environment and threaten the health and livelihoods of native residents. Next week, the World Bank will decide if the mining giant can pursue its greedy demands for payment under an industry-friendly trade rule that would force El Salvador to pay a huge penalty for blocking the project. Vancouver-based Pacific Rim Mining Corp. has been exploring for gold and …