Fox reporterette, wondering about fallout. Uh...you don't get fallout from an underground test...
I'm sure they have no clue about underground testing.
I'll cut them some slack on that regard. Their only point of reference if the fear mongering aspects of anything nuclear.
Well you aren't supposed to. But Shiite happens, even with US underground tests.
Hard to infer yield from seismic magnitude, since it depends on how well the energy of the bomb couples into the local geological strata.