Ian MacLure wrote:

"Bob Coe" wrote in news:fcQ0d.24167$ni.22295@okepread01:


That's never a good sign...


Given it was apparently close to the PRC border, I cannot imagine
Beijing is very happy if in fact it is a nuke of some sort.
I expect radiation monitoring or Vela satellite data will soon
establish what it was.
I'd say it was another giant economy size accidental detonation
of something like that train earlier this year.

IBM

They're claiming it was an explosives-assisted excavation (read: pour in a
couple thousand gallons of ANFO and ignite) for a new hydroelectric reservoir.

The lack of radiation seems to support this theory.