Was it a hoax? Nine months after residents of Show Low, Ariz., fervently debated a proposal to build a 900-megawatt nuclear power plant in the nearby White Mountains, the proposal is dead. "It all just went away," Show Low City Manager Patrick Sherman told the Arizona Republic. Last June, Phil Downing, then executive director of the White Mountain Regional Development Corp., stunned the community when he told local papers he was helping a nuclear power company locate a site north of Show Low. Opposition groups organized to keep nuclear power out, while supporters argued that a plant would boost a sagging economy. But the company never notified the Nuclear Regulatory Commission of its plans to build a facility. Now, Downing says the company may have used the nuclear plant to test the waters before initiating a more controversial project, such as a nuclear waste dump.