Re: lantern mantles

[roseb@SMTP-gw.gdls.com (Boyd H Rose)]

     I do not know the typical quantity ot Th-232 contained in one mantle.
     
     I have, however, taken two separate readings on two mantles.  The 
     results are:
     
        Ludlum Model 2 with HP-270 beta window closed:  0.8 mR/hr contact
        Ludlum Model 3 with 43-5 probe:                 16 kcpm contact
        Eberline E-140 with HP-210:                     16 kcpm contact
     
     
     
     Boyd H. Rose, CM, IHIT
     Radiation Protection Officer
     General Dynamics Land Systems Division roseb@gdls.com
     
     The opinions expressed above are solely my own and do not under any 
     circumstance reflect those of my employer.



______________________________ Reply Separator _________________________________
Subject: lantern mantles
Author:  radsafe@romulus.ehs.uiuc.edu at Internet/Unix
Date:    11/18/97 2:00 PM


Dear Radsafe:

Does anyone happen to know what the typical quantity (mg, uCi, whatever)
     
of Th-232 is contained in one of the Coleman lantern mantles 
that used to contain thorium?  What is a typical exposure rate 
on contact with one?
     
D. Steva