Two years ago, Maries Jimenez demonstrated against the proposed development of the Resolution Copper mine by Rio Tinto and BHP Billi-ton here. The mining site, nearly two kilometers above the largest known copper reserve in North America, is also adjacent to Apache Leap, a majestic jutting cliff of rocks. According to legend, Apache warriors, under attack at dawn by the U.S. Cavalry, chose to jump to their deaths from the cliff rather than be captured. Mine opponents like Mr. Jimenez