The operator of the Fukushima Daiichi nuclear power complex said Thursday it had retrieved a small amount of melted fuel from one of the disaster-stricken reactors, in its first such attempt after the plant was hit by a massive earthquake and tsunami over a decade ago.The successful extraction of the debris from the No. 2 reactor -- albeit a pebble-like substance less than 3 grams -- is seen as a key step toward the goal of completing the decades-old process of decommissioning the plant, which suffered fuel meltdowns in three reactors in the nuclear crisis that began in March 2011.An estima…READ FULL ARTICLE