Question re. Radon

[Joseph R Vasselli]

  Does anyone know what duration of exposure to elevated levels of
  radon in the home is typically required before pathogenic effects
  such as cancer begin to appear? Also, is any particular type of
  malignancy associated with chronic exposure to radon? Two female 
  residents of the same home in our neighborhood (in which radon 
  contamination was detected at some homesites) have, within the past 
  three-four years, turned up with leukimia in one case, and uterine 
  cancer in another. Any information would be appreciated.

           J. Vasselli  jrv1 at columbia.edu