Re[2]: Thorium Lenses

[michael_coogen@hq2ccgw.hq.dla.mil]

     Thorium is added to glass to increase its strength.  Also add to 
     certain metal alloys to increase heat resistance....mike coogen


______________________________ Reply Separator _________________________________
Subject: Re: Thorium Lenses
Author:  radsafe@romulus.ehs.uiuc.edu at hq2ccgw
Date:    8/31/95 2:35 PM


        Reply to:   RE>>Thorium Lenses
I had some dealing with thoriated prism lenses out of aircraft sextants over 
ten years ago.  It was in the melt of the glass rather than being in a coating.
 There was no significant hazard unless the glass broke and controlling broken
glass is, of course, easy.
     
I'm not sure who made them, I think it was either Baird Atomic or Nuclear 
Chicago made them.
     
I could never find out why thorium was needed in the glass.
     
The original message is still not getting out.  Maybe this war story will be 
useful and maybe it won't.
     
-------------------------------------- 
Date: 8/31/95 12:31 PM
To: GORDON MILLER
From: radsafe@romulus.ehs.uiuc.edu
     Don't think the second time went either...mike coogen
     
     
______________________________ Reply Separator 
_________________________________
Subject: Thorium Lenses
Author:  radsafe@romulus.ehs.uiuc.edu at hq2ccgw 
Date:    8/31/95 12:38 PM
     
     
     
Don't think the first try at sending this went properly so this is the 
second:
     
     
     
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Subject: Re: Thorium Lenses
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