The history of Rocky Flats - Friends of the Rocky Flats National Wildlife Refuge

Pu soil concentrations to a depth of 1 meter in 5 pits downslope from a heavily contaminated area.

DOE sampling locations before cleanup (outside COU) and post cleanup

Sample pits 1 m (more than 3 feet deep) in heavily contaminated soil showed that Pu levels were 25,000 times smaller than on the surface.

Reliable information on Rocky Flats history

Paul Karolyi considered the history and present of Rocky Flats in his excellent Season 4 of his radio show Changing Denver. It has interviews with a number of people on both sides of the issue of Refuge use.

For a sense of how pervasive nonsense manages to survive for decades, read Vincent Carroll's opinion in the Denver Post from 2012, looking back on the previous 20 years of nonsense. In 2017 Dr. Larry Wolk, then Executive Director and Chief Medical Officer of the CDPHE, countered common mis-statement in a Golden Transcript article.

Rocky Flats Stewardship Council
The Colorado Department of Public Health and Environment
Office of Legacy Management, U.S. Department of Energy
The Rocky Flats National Wildlife Refuge

The Stewardship Council web page depends on now-defunct Flash browser plugins to show the pictorial history. For recollections of history by people who worked at Rocky Flats, visit

The Rocky Flats Cold War Museum