For you moderates out there here is a link to a 2005 free report to the public on the health risks to the public at the Rocky Flats Site (REFTS). They provide a good history and background report. Not too long. Not too short. Some very nice tables and figures. The conclusions start on page 76 if you want to jump ahead.

http://www.atsdr.cdc.gov/HAC/pha/RockyFlats%28DOE%29/RockyFlatsPHA051305a.pdf