RE: Lightning strikes Sears Tower (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 31 Aug 2007 23:40:28 -0700
From: Jim Mora <jmora@xxxxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: RE: Lightning strikes Sears Tower (fwd)

Hello List,

I have often wondered: what sort of grounding systems are used for these
bolts - particular Positive Lightning? Has anyone had experience with high
rise grounding systems? It's hard to imagine all the computers running in
Sear's Tower without a twitch after such events. The instantaneous magnetic
field must be enormous.

Regards,
Jim Mora

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx] 
Sent: Tuesday, August 28, 2007 5:45 AM
To: tesla@xxxxxxxxxx
Subject: Lightning strikes Sears Tower (fwd)


---------- Forwarded message ----------
Date: Mon, 27 Aug 2007 23:18:20 -0800
From: Greg Leyh <lod@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Lightning strikes Sears Tower

http://www.liveleak.com/view?i=27a_1187998916

Of particular interest is the horizontal strike that passes completely 
through the view area.   GL