On Tue, 3 May 1994, Keith wrote: > (That's a pretty hot storage > cabinet - is the activity from radium? ... worried about radon? ) If it is radium, radon daughters could be plated out in the cabinet. You might want to take smears in the cabinet. I had a similar situation, with radium sitting in a safe for about 30 years. The safe was contaminated with radon daughters. Ninni Jacob