11.   And in a truly catastrophic attack on Indian Point, those facing only the long-term effects of radiation exposure would probably consider themselves fortunate.

12.   Another factor in deciding how thoroughly to clean up the site is radiation exposure to workers doing the decommissioning.

13.   Another consideration could be the cumulative radiation exposure.

14.   At present, radiation caused by cosmic rays is one of the largest sources of natural radiation exposure.

15.   But for newcomers, it is still unnerving to be surrounded by signs warning of radiation exposure.

16.   But in some cases the amount of radiation was far greater, especially in cases that were not experiments per se but in which there was unplanned radiation exposure.

17.   But the drug must be given before the radiation exposure, or very soon after, which means that it must be stored near the site of potential exposure.

18.   But to varying extents, some have begun rerouting flights in periods of high solar activity, both to reduce potential radiation exposure and to ensure good radio communications.

19.   Department officials said they were bringing state rules in line with federal Department of Energy standards and, in fact, strengthening limits on permissible radiation exposure.