Decontaminated but slightly radioactive soil from Fukushima was delivered Saturday to the Japanese prime minister's office to be reused in an effort to showcase its safety. This is the first soil to be used, aside from experiments, since the 2011 nuclear disaster when the Fukushima Daiichi nuclear power plant suffered a cataclysmic meltdown following an earthquake and tsunami that left large amounts of radioactive materials spewing out from the facility, polluting surrounding areas.