Reported here:
Readings just above the ground near a set of tanks at the Fukushima Daiichi plant showed radiation as high as 2,200 millisieverts (mSv), the Nuclear Regulation Authority (NRA) said on Wednesday. The previous high in areas holding the tanks, 1,800 mSv, was recorded on Saturday. Both levels would be enough to kill an unprotected person within hours. The NRA has said the recently discovered hotspots are highly concentrated and easily shielded.
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Normally, 2000 mSv/hr is enough to kill you, but because the story says the radiation is "easily shielded" after it's found, this must mean this is not deadly gamma radiation for the most part. Paper can block alpha and foil can block beta, but gamma requires 2.5 inches of concrete just to reduce intensity by 50%.
