Re[2]: shielding contaminants

["Reese, Robert P" <RPREESE@saix367.sandia.gov>]

According to an application note I have from Canberra, it is Co-60 which 
contaminates post-WWII steel.  Apparently, the Co-60 was used "in blast furnace 
crucible liners to monitor wear or breakthrough."  Canberra sells shielding 
material "batch tested" with "diminishingly small Co-60 content."

I always thought it was the nuclear-age fallout that laced post-WWII steel.

______________________________ Reply Separator _________________________________
Subject: Re: shielding contaminants
Author:  radsafe@romulus.ehs.uiuc.edu at CCSMTP
Date:    11/10/95 5:10 PM


Dear Dr. Low,
     
I was always told to use pre-WWII battleship armor plate for low-level shielding
     
(there was no Cs-137 fallout contamination).  That was tens of years ago, so I 
don't know if it is still available (It was sometimes hoarded by the more 
"nuclear aware" scrap dealers, so you might still be able to find some).