Image: Plutonium plume from the 1957 fire at Rocky Flats, per Colorado state dept of public health

Description: Accompanying text states that the associated Pu-239 contamination levels are only accurate within two orders of magnitude. However, other estimates regarding Pu releases point out that it may only be accurate within 3-4 orders of magnitude.
Title: Plutonium plume from the 1957 fire at Rocky Flats, per Colorado state dept of public health
Credit: http://www.cdphe.state.co.us/rf/charta.htm[dead link]
Author: Colorado State Department of Public Health.
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License: PD-US
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