Demands that the Shell Bakersfield Refinery remain open intensified Friday, as Sen. Barbara Boxer joined a chorus of calls to the Federal Trade Commission and California Attorney General Bill Lockyer to prevent the closure. "The plant must remain open until a buyer is found and a sale is completed. Otherwise, consumers will pay the prices," Boxer wrote in a letter to FTC Chairman Timothy Muris. Boxer's letter caps a week that has seen a wide array of critics of the proposed closure emerge. Also this week, the FTC announced it is evaluating the situation, and the state Attorney General's office...