Here are a few additional references: IAEA Safety Series No. 109: $200 per person-rem NUREG/BR-0184: $2,000 per person-rem Rodney Bauman rodney_bauman@wssrap-host.wssrap.com ************************************************************************ The RADSAFE Frequently Asked Questions list, archives and subscription information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html