Tokyo Electric Power Co., the utility that runs the destroyed Fukushima nuclear plant, has opened a rest area and canteen for cleanup workers, more than four years after the world's worst nuclear disaster since Chernobyl. The center, on the western edge of the power station, opened on Sunday, replacing pre-fabricated facilities used by workers since an earthquake and tsunami triggered multiple meltdowns on March 11, 2011, forcing more than 160,000 residents to flee from nearby towns.