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Re: Re[2]: Radon Question from Occ-Med-Env



An efficient particulate filter should give very good protection against 
radon effects. The radon gas is not stopped, but it enters and leaves the 
body (especially the bronchial region) much too quickly for an appreciable 
fraction to decay into Rn daughters while inside. The radon daughters in the
 air should be stopped by the filter, and they are what do the damage.

Bernard L. Cohen
Physics Dept.
University of Pittsburgh
Pittsburgh, PA 15260
Tel: (412)624-9245
Fax: (412)624-9163
e-mail: blc+@pitt.edu