Lyle

I used a portable XRay machine on a timber gun carriage that was operated by 
Australian Defence Industries to routinely check for welding flaws, concrete 
reinforcing etc.  Such machines are around in the building industry but the 
ones I have seen are calibrated to see through concrete and steel, rather 
than through weatherboards or plywood sheet.

It was an incredibly heavy lead suitcase holding a small radioactive source 
and it fired through the target to an Xray sheet taped on the back of the 
item.  I was told to stand far, far away, so it may not be suitable for an 
occupied or busy area.

Denis
----- Original Message ----- 
From: "Lyle E. Browning" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, June 28, 2005 12:37 PM
Subject: Non Intrusive Inspection Devices


> Does anyone out there know of a device that will penetrate walls to record 
> timber framing without damaging the wall itself?
>
> Homeland Security, Border Patrol and similar groups must have some means 
> of rapidly investigating containers, trucks and other objects and I wonder 
> if someone has used one to look at the structure of older buildings.
>
> Any info gratefully received.
>
> Lyle Browning
>
>