RE: Rad Sources for Workshops

["Emer, Dudley" <EMERDF@NV.DOE.GOV>]

The older Coleman lamp mantles sold in camping stores contain thorium and

they work very well as a check source.  Be aware that some of the newer lamp

mantles do not use thorium, so you'll need to check them before you buy 'em.



Dudley Emer





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