Industrial sources

["John Arnish" <arnishj@smtplink.dis.anl.gov>]

     This question may have already been posted to RADSAFE however,
     
     What companies, outside of the US DOE if any, produce industrial 
     radiation sources?  
     
     I already have a list of corporations that produce medical 
     isotopes, but I would like to obtain a list of companies that 
     produces sources for irradiators, smoke detectors,exit signs, 
     etc.  
     
     Responses can be sent directly to me at
     
     jarnish@anl.gov
     
     Thank you in advance
     
     Sincerely
     
     John Arnish