[JimRed]

So... this isn’t at all related to whatever exploded above Siberia back in the early years of last century...?

The Tunguska event...I don't think they've found any fragments of that one. It might have been an icy one of a much larger size. It had the effect of a small nuke, minus the radiation. Fortunately the area over which it exploded was unpopulated.

[Jack Hammer]

Yes, that’s it - you’ve got it... Tunguska. Quite an event, from what little I’ve read.