The site is a nuclear landfill that stored material from Idaho in the 1950s, and also accepted shipments nuclear waste from the Rocky Flats nuclear weapons plant near Denver throughout much of the 1950s and the 1960s. Commercial nuclear waste was also sent to the facility for years, but Idaho officials eventually sued the federal government in an effort to stop the shipments and force the cleanup. The facility currently stores more than 300 metric tons of spent nuclear fuel.

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