It's hard to forget the shocking TV footage of hydrogen explosions at three reactor buildings days after the massive earthquake and tsunami struck the Fukushima No. 1 nuclear plant in March 2011, resulting in a triple core meltdown and the world's worst nuclear crisis since Chernobyl.
That was the beginning of Tokyo Electric Power Co.'s long struggle to contain radioactive material spilling outside its damaged reactors, whose dangerous decommissioning will take decades to complete.
Five years on, Tepco has cleaned up some of the debris and decontaminated the site somewhat in an effort to improve the working conditions of the thousands of workers there.
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