On-again, off-again plans for the world's largest gold and copper mine could be back on again, after a federal judge in Alaska issued a preliminary injunction blocking the Environmental Protection Agency from its ongoing efforts to bury the project. Pebble Partnership, the Canadian company behind the project, which would take place near Anchorage, claims the regulatory agency has conspired illegally with opponents of the mine to devise scientific and environmental justifications for blocking it. Salmon fishermen in Washington state and Alaska, Native American groups and environmental organizations have opposed the massive project for several years, and had appeared to have...