Bob Lunn 08/15/97 04:20 PM > ...there is NO safe DOSE of radiation. Ok, this _has_ become tedious but I can't resist. Mike, given that the risk of carcinogenesis when exposed to ionising radiation cannot be eliminated, how would you evaluate and manage the threats posed by the various beneficial uses of such radiation? ___Bob Unsubscribe message would waste space here - no thanks :P