On September 11, 1957, a plutonium fire at Rocky Flats spread into the building's filtration system, allowing radioactive material to escape into the atmosphere. Decades later, Colorado researchers reconstructed the accident and mapped how airborne plutonium may have traveled across surrounding communities.

Mental health professionals practicing in Arvada, Broomfield, Westminster, Superior, Boulder and other communities near Rocky Flats may encounter clients whose emotional well-being has been affected by the history of the former nuclear weapons plant. Some clients may have lived, worked or attended school near Rocky Flats. Others may be former workers, family members of workers, current residents or people who learned about the site only after receiving a serious medical diagn

The discovery of Rocky Flats-derived plutonium in air-filter samples collected along Indiana Street has renewed concerns about plans to expand the Rocky Mountain Greenway trail system near the former nuclear weapons plant. The Rocky Mountain Greenway Project began in 2016 as an effort to connect three national wildlife refuges—Rocky Mountain Arsenal, Two Ponds and Rocky Flats—through a regional trail network. Plans include an underpass connecting the Rocky Flats National Wild