Setting the stage for a knockdown fight over the fate of four towering Klamath River dams accused of hammering salmon stocks and the West Coast fishing industry, a new government study released Friday has found that decommissioning the dams could cost $100 million less than operating them for another generation. The economic analysis, ordered by the California Energy Commission in cooperation with the U.S. Department of the Interior, should provide ammunition for Indian tribes, environmentalists and commercial fishermen eager to see the hydropower dams demolished to reopen more than 300 miles of river that have been blocked to migrating salmon...