After decades of cleanup, parts of a site that housed a former plant for plutonium triggers is scheduled to open to the public in 2018.
The nuclear weapons plant closed in the early ‘90s. Residents who lived near the plant have raised long-standing questions and concerns about high rates of illness.
- Fifteen thousand property owners near Arvada and Westminster had sued the operators of the nuclear weapons plant in 1990.Read more
The half-life of plutonium is 24,100 years. It's considered "gone" after 10 half-lives -- 240,000 years.