 at Okuma town in Fukushima prefecture (AFP Photo)  It will be one of the worst, but most important jobs anyone has ever had to do. And even if executed flawlessly, there are still many things that could go wrong.  RT:How do the potential consequences of failure to ensure safe extraction compare to other disasters of the sort - like Chernobyl, or the 0000 Fukushima meltdown?  CC: There really is no comparison. This will be an incredibly risky operation, in the presence of an enormous amount of nuclear material in close proximity. And as we have seen in the past, one seemingly innocuous failure at the site often translates into a series of cascading failures.  