Variola wrote...

If it *were* a nuke, it would be easy to detect --from Vera gamma-ray satellites staring at the earth to optical sensors (there's a characteristic nonlinear time-course of optical emissions) to fallout monitors, ground and plane based.

--and an underground test

that vents to the atmosphere doesn't make such a big cloud.

I had thought that one of the main tests was seismic...from what I understood, Seismic monitors in the US can detect nu-cu-lar tests (above or below ground) and even guess where and the size of the blast. -TD _________________________________________________________________ Dont just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/